Document:

Exhibit 10.8

               PARENT Series A and Series B CPECs PLEDGE AGREEMENT

                                 BY AND BETWEEN

                           BCP CRYSTAL HOLDINGS LTD. 2
                                   as Pledgor
                                       and

                       DEUTSCHE BANK AG, NEW YORK BRANCH,
                         as Pledgee and Collateral Agent

                                       and

                     BCP CAYLUX HOLDINGS LUXEMBOURG S.C.A.,
                                 as the Company

THIS PLEDGE AGREEMENT is dated April 6, 2004 and made by and between:

(1)  BCP CRYSTAL HOLDINGS LTD. 2, a company organized under the laws of the
     Cayman Islands, with registered office at c/o Walkers SPV Limited, Walker
     House, PO Box 908 GT, Mary Street, George Town, Grand Cayman, Cayman
     Islands (the "Pledgor" or "BCP Crystal");

And

(2)  DEUTSCHE BANK AG, NEW YORK BRANCH, the New York branch of a German banking
     corporation, on its own behalf and as collateral agent for the benefit of
     the Secured Parties (as defined below), (hereinafter the "Pledgee" or the
     "Collateral Agent");

And

(3)  BCP CAYLUX HOLDINGS LUXEMBOURG S.C.A., a corporate partnership limited by
     shares (societe en commandite par actions) incorporated under the laws of
     the Grand-Duchy of Luxembourg, whose registered office is at 8-10, rue
     Mathias Hardt, L-1717 Luxembourg and registered at the Luxembourg
     Companies' Registrar under number B 96771 (hereinafter the "Company" or
     "Parent") acting through its general partner and manager, BCP Caylux
     Holdings Ltd 1, an exempted company governed by the laws of the Cayman
     Islands with registered office at c/o Walkers SPV Limited, Walker House, PO
     Box 908 GR, Mary Street, George Town, Grand Cayman, Cayman Islands ( the
     "General Partner and Manager")

WHEREAS

A.   The Company has as of the date hereof issued registered Series A
     Convertible Preferred Equity Certificates (the "Series A CPECs") and
     registered Series B Convertible Preferred Equity Certificates (the "Series
     B CPECs");

B.   The Pledgor owns all the Series A CPECs and all the Series B CPECs issued
     by the Company;

C.   The Pledgor, the Company, Celanese Americas Corporation ("CAC"), certain
     other subsidiaries of the Pledgor from time to time party thereto as
     borrowers under the Revolving Facility provided for in the Credit Agreement
     (as defined below) (the "Subsidiary Revolving Borrowers" and together with
     CAC and Parent, the "Borrowers"), the Lenders party thereto from time to
     time (the "Lenders"), MORGAN STANLEY SENIOR FUNDING, INC., as global
     coordinator, DEUTSCHE BANK AG, NEW YORK BRANCH, as administrative agent and
     as collateral agent for the Lenders, and DEUTSCHE BANK SECURITIES INC. and
     MORGAN STANLEY SENIOR FUNDING, INC., as joint lead arrangers have entered
     into a Credit Agreement dated as of April 6, 2004 as amended, supplemented,
     waived or otherwise modified from time to time (the "Credit Agreement").

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D.   The Lenders have agreed to extend credit to the Borrowers subject to the
     terms and conditions set forth in the Credit Agreement. The obligations of
     the Lenders to extend such credit are conditioned upon, among other things,
     the execution and delivery of this Pledge Agreement. The Pledgor is the
     majority limited partner of the Parent, will derive substantial benefits
     from the extension of credit to the Borrowers pursuant to the Credit
     Agreement and is willing to execute and deliver this Pledge Agreement and
     to pledge all its CPECs (and for the avoidance of doubt the Collateral, if
     different from the CPECs) in the Parent to secure any and all of the
     Secured Obligations in order to induce the Lenders to extend such credit.

NOW, THEREFORE, the Pledgor hereby agrees with the Pledgee as follows:

1.   DEFINITIONS AND INTERPRETATION

1.1. Unless otherwise defined herein or the context otherwise requires,
     capitalised terms used in this Pledge Agreement, including its preamble and
     recitals, have the meanings provided in the Credit Agreement.

"CREDIT AGREEMENT" shall have the meaning as set out in the recitals hereto.

"CPECs" means all the convertible preferred equity certificates regardless of
class or series issued by the Company held by, to the order or on behalf of the
Pledgor at any time (including for the avoidance of doubt the Series A CPECs and
the Series B CPECs), including for the avoidance of doubt any CPECs or
securities of the Company which shall be issued to the Pledgor from time to
time, regardless of the reason of such issuance, whether by way of substitution,
replacement, interest, conversion or in addition to the CPECs held on the date
hereof, whether following an exchange, division, free attribution, conversion,
contribution in kind or in cash or for any other reason (the "Future CPECs"), in
which case such Future CPECs shall immediately be and become subject to the
security interest created hereunder (and be part of the CPECs).

"EVENT OF DEFAULT" has the meaning given to it by the Credit Agreement.

"HOLDINGS GUARANTEE" means the Guarantee and Pledge Agreement between Holdings,
each Intermediate HoldCo and the Collateral Agent.

"LOAN DOCUMENT OBLIGATIONS" means (a) the due and punctual payment by each
Borrower of (i) the unpaid principal of and interest (including interest
accruing during the pendency of any bankruptcy, insolvency, receivership or
other similar proceeding, regardless of whether allowed or allowable in such
proceeding) on the Loans made to such Borrower, when and as due, whether at
maturity, by acceleration, upon one or more dates set for prepayment or
otherwise, (ii) each payment required to be made by any Borrower under the
Credit Agreement in respect of any Letter of Credit, when and as due, including
payments in respect of reimbursement of disbursements, interest thereon

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(including interest accruing during the pendency of any bankruptcy, insolvency,
receivership or other similar proceeding, regardless of whether allowed or
allowable in such proceeding) and obligations to provide cash collateral and
(iii) all other monetary obligations of any Borrower to any of the Secured
Parties under the Credit Agreement and each of the other Loan Documents,
including obligations to pay fees, expense and reimbursement obligations and
indemnification obligations, whether primary, secondary, direct, contingent,
fixed or otherwise (including monetary obligations incurred during the pendency
of any bankruptcy, insolvency, receivership or other similar proceeding,
regardless of whether allowed or allowable in such proceeding) and (b) the due
and punctual performance of all other obligations of the Borrowers under or
pursuant to the Credit Agreement, this Pledge Agreement, the Share Pledge
Agreement, the Holdings Guarantee and each of the other Loan Documents.

"PLEDGED COLLATERAL" the CPECs, the Future CPECs and any Related Assets.

"RELATED ASSETS" means all dividends, interest and other monies payable in
respect of the CPECs and all other rights, benefits and proceeds in respect of
or derived from the CPECs (whether by way of redemption, bonus, preference,
option, substitution, conversion or otherwise) except to the extent these
constitute CPECs.

"RIGHTS OF RECOURSE" means all and any rights, actions and claims the Pledgor
may have against (i) the obligors under the Credit Agreement or other Loan
Documents and (ii) any entity having granted security or given a guarantee for
such obligors' obligations under the Loan Documents (the "SECURITY GRANTOR")
arising under or pursuant to the enforcement of the present pledge including, in
particular, the Pledgor's right of recourse against the such obligors under the
terms of Article 2028ff. of the Civil Code (including, for the avoidance of
doubt, any right of recourse prior to enforcement), or any right of recourse by
way of subrogation or any other similar right, action or claim under any
applicable law.

"SECURED OBLIGATIONS" means (a) the Loan Document Obligations, (b) the due and
punctual payment and and performance of all obligations of the Pledgor owing to
the Secured Parties under and pursuant to this Pledge Agreement, the Parent
Share Pledge Agreement, (c) the due and punctual payment and performance of all
the obligations of the Pledgor under and pursuant to the Holdings Guarantee (d)
the due and punctual payment and performance of all obligations of any Borrower
under each Swap Agreement that (i) is in effect on the Closing Date with a
counterparty that is a Lender or an Affiliate of a Lender as of the Closing Date
or (ii) is entered into after the Closing Date with any counterparty that is a
Lender or an Affiliate of a Lender at the time such Swap Agreement is entered
into, and (e) the due and punctual payment and performance of all obligations of
any Borrower and any of its subsidiaries in respect of overdrafts and related
liabilities owed to a Lender or any of its Affiliates and arising from cash
management services (including treasury, depository, overdraft, credit or debit
card, electronic funds transfer and other cash management arrangements).

"SECURED PARTIES" means (a) the Lenders (and any Affiliate of a Lender to which
any

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obligation referred to to in clause (d) and (e) of the definition of the term
"Secured Obligations" is owed), (b) the Administrative Agent and the Collateral
Agent, (c) each Issuing Bank, (d) each counterparty to any Swap Agreement
entered into with a Loan Party the obligations under which constitute Secured
Obligations, (e) the beneficiaries of each indemnification obligation undertaken
by any Loan Party under any Loan Document and (f) the successors and permitted
assigns of each of the foregoing.

"SHARES" means limited partners' shares regardless of class in the share capital
of the Company.

"SHARE PLEDGE AGREEMENT" means the share pledge agreement under Luxembourg law
between inter alia the Pledgor and the Collateral Agent.

1.2.     Nothing in this Agreement shall be construed as limiting any of the
         rights and remedies under the Credit Agreement, unless expressly set
         forth herein.

1.3.     The rules of construction specified in Section 1.02 of the Credit
         Agreement also apply to this Pledge Agreement.

1.4.     For the avoidance of doubt, whenever in this Pledge Agreement any of
         the parties hereto is referred to, such reference shall be deemed to
         include the successors and assigns of such party; and all rights and
         obligations of the Pledgor (or anyone thereof) or the Pledgee that are
         contained in this Pledge Agreement shall bind and inure to the benefit
         of their respective successors and assigns.

1.5.     Headings and the Index used herein are for convenience of reference
         only and are not to affect the construction of, or to be taken into
         consideration in interpreting, this Pledge Agreement

2.       PLEDGE

2.1      As continuing security for the due and punctual performance, and the
         payment when due and discharge, of the Secured Obligations, the Pledgor
         hereby pledges as a first priority pledge to the Pledgee, who accepts,
         any and all of its CPECs in the Company of whatever nature, existing or
         to be acquired by the Pledgor and owned by the Pledgor (including for
         the avoidance of doubt, any Future CPECs) (the "Pledged CPECs") and the
         Pledgor hereby grants to the Pledgee, a first ranking security on such
         Pledged CPECs and in all proceeds thereof in respect of or in exchange
         or replacement for the Pledged CPECs (the "Pledge") as collateral
         security for the prompt and complete payment and discharge of the
         Secured Obligations and transfers the Pledged CPECs by way of security
         (gage) (pursuant to article 114(3)(c) of the Commercial Code) to the
         Pledgee.

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2.2      The Pledgee accepts the Pledge and transfer by way of security (gage)
         and the Company acknowledges and accepts the Pledge for purposes of
         article 1690 of the Luxembourg Civil Code and article 114 of the
         Commercial Code.

2.3      The Pledgor shall simultaneously herewith, or in the case of CPECs
         issued to the Pledgor after the date hereof (i.e. any Future CPECs),
         immediately upon the issue thereof to the Pledgor procure the
         inscription of the Pledge and the transfer by way of security (gage) in
         accordance with article 114 (3) (c) of the Commercial Code in favour of
         the Pledgee in the register of CPECs holders of the Company and provide
         the Pledgee with a written confirmation from the Company (together with
         a certified copy of the relevant pages in the register) that these
         inscriptions have been duly made. For the avoidance of doubt the
         Pledgor and the Pledgee hereby request and instruct the Company to
         immediately register the Pledge in the register of CPECs holders of the
         Company.

         Without prejudice to the above provisions, the Pledgor hereby
         irrevocably authorises and empowers the Pledgee to cause any formal
         steps to be taken by the General Partner and Manager of the Company for
         the purpose of further perfecting the present Pledge and, for the
         avoidance of doubt, undertake to take any such steps itself if so
         directed by the Pledgee. In particular, should any such steps be
         required in relation to Future CPECs of the Company or Related Assets,
         the Pledgor undertakes to take any such steps immediately upon issuance
         or receipt of such Future CPECs of the Company or Related Assets, and,
         where possible, to instruct the Company to take any such steps, without
         prejudice to the right of the Pledgee pursuant to the first sentence
         hereof.

2.4      For the avoidance of doubt, in the event of a conversion of CPECs into
         Shares of the Company, the Pledge on such CPECs shall remain effective
         and be transferred automatically onto the Shares issued therefore.

         The Pledgor shall simultaneously with such conversion procure the
         inscription of the Pledge on the Shares issued upon conversion and the
         transfer by way of security in favour of the Pledgee in the register of
         shareholders of the Company and provide the Pledgee with a written
         confirmation from the Company (together with a certified copy of the
         relevant page in the register) that this inscription has been duly
         made. For the avoidance of doubt the Pledgor and the Pledgee hereby
         request and instruct the Company to immediately register the Pledge on
         the Shares issued upon conversion in the register of shareholders of
         the Company.

2.5      The Pledgor, the Pledgee and the Company jointly instruct the General
         Partner and Manager of the Company and Me Pierre Beissel and Me
         Benedicte Kurth (each of Arendt and Medernach), each acting without the
         other and with full power of substitution, as proxy to register the
         Pledge and to inscribe the Pledge in favour of the Pledgee in the
         register of CPECs holders of the Company (or in the case of clause 2.3
         the register of shareholders in which case the text shall be adapted
         mutatis mutandis).

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         The text to be used for the inscription shall be the following with the
         indications:

         "Pursuant to the Parent Series A and Series B CPECs Pledge Agreement
         dated [ ] 2004 between BCP Crystal Holdings Ltd 2 as Pledgor, Deutsche
         Bank AG, New York Branch as Pledgee and the Company, BCP Crystal
         Holdings Ltd 2has pledged and transferred by way of security pursuant
         to article 114.3(c) of the Commercial Code, all its right, title,
         interest and benefit, present and future, on, to and under all of its
         [Series A/B] CPECss (as well as any Future CPECs) and all its right,
         title, interest and benefit, present and future, in and to all proceeds
         which may from time to time and at any time be distributed or derived
         from, or accrue on or arise in respect of or related to said CEPCss, as
         first ranking security to Deutsche Bank AG, New York Branch (on its on
         behalf and as collateral agent for the benefit of the Secured Parties).

         [Signature]"

2.6      This Pledge shall be in addition to and independent of any other
         pledge, guarantee, or other security given in respect of the Secured
         Obligations.

2.7      The Pledge created hereby shall not be affected in any way by any
         variation, amendment, extension, waiver, compromise or release of any
         or all of the Secured Obligations, the Credit Agreement, the Holdings
         Guarantee, the Parent Share Pledge Agreement, any Loan Document, or of
         any security from time to time therefore. To the extent it can be
         avoided by any action of the Pledgor or otherwise, the Pledge created
         herein shall no be affected by any change in the laws, rules or
         regulations of any jurisdiction or by any present or future action of
         any governmental authority or court.

2.8      The Pledgor shall forthwith, upon execution hereof, deposit with the
         Pledgee all certificates and documents of title to the CPECs, if any.

3.       RIGHTS ATTACHING TO THE CPECs

3.1.     Until the occurrence of an Event of Default and that is continuing (as,
         for the avoidance of doubt, defined in the Credit Agreement), and
         following a notice being issued by the Collateral Agent in accordance
         with clause 6 below, any powers (including any voting powers, if any)
         in respect of the Pledged CPECs shall, as from the date of this Pledge
         Agreement be exercised on all matters by the Pledgor, provided however,
         (i) that the Pledgor shall only exercise such right in a manner which
         does not adversely affect the Pledge and the rights of the Pledgee
         hereunder, (ii) that no consent, waiver or ratification given or action
         taken, which could reasonably be expected to materially and adversely
         affect the rights of the Pledgee, the rights of remedies of the
         Collateral Agent under this Agreement, the Credit Agreement or any
         other Loan Document or the ability of the Pledgee to exercise the same
         and (iii) that the CPECs (or any part or number thereof) may only be
         converted into Shares with the prior written approval of the Pledgee.

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3.2.     The Pledgee shall receive a copy of any CPECs holder notifications,
         notices or information and the Company undertakes to provide the
         Pledgee therewith in good time (and in any event no later than the same
         is provided for the Pledgor or any other CPECs holders).

3.3.     After an Event of Default shall have occurred and is continuing and
         following a notice being issued by the Collateral Agent in accordance
         with clause 6 below, any powers attaching to the CPECs shall be
         exercised by the Pledgee in such manner as he sees fit subject to
         complying with any applicable formalities provided for by law. For the
         avoidance of doubt, the Pledgee shall have the right following the
         occurrence and continuation of an Event of Default to act as the
         Pledgor's irrevocable proxy and for as long as there are any Secured
         Obligations outstanding, to represent the Pledgor at any CPECs holder's
         meeting and exercise the voting rights in any manner the Pledgee
         reasonably deems fit for the purpose of protecting or enforcing the
         rights of the Pledgee hereunder. The Pledgor shall do whatever is
         necessary in order to ensure that the exercise of the voting rights in
         these circumstances is facilitated and becomes possible for the
         Pledgee, including but not limited to the issuance of a written proxy
         in any form required by applicable law.

3.4.     Without limiting the forgoing, after an Event of Default shall have
         occurred and be continuing, the Pledgor shall take any steps required
         or appropriate to convert all or part of the CPECs into Shares if so
         requested or directed by the Security Agent.

3.5.     The Pledgor and the Company hereby expressly acknowledge that the
         Pledgee shall, following the occurrence and continuation of an Event of
         Default and following a notice being issued by the Collateral Agent in
         accordance with clause 6 below, pursuant to and in accordance with
         Section 3.3 be unconditionally authorised to exercise any voting rights
         attached to the Pledged CPECs in any manner necessary or useful for the
         purposes of ensuring the complete satisfaction of the obligations under
         the Credit Agreement and the Pledgor and the Company hereby waives any
         claim the Pledgor or the Company may have in this respect, in
         particular with respect to any liability of the Pledgee, except in
         cases of wilful misconduct or gross negligence of the Pledgee.

3.6.     Upon the occurrence of an Event of Default and that is continuing and
         following a notice being issued by the Collateral Agent in accordance
         with clause 6 below, all rights to future interest and other future
         cash proceeds receivable in connection with the Pledged CPECs shall
         automatically be transferred to the Pledgee.

4.       RIGHTS OF THE PLEDGEE, LIABILITY, INDEMNIFICATION

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4.1.     The Pledgee shall not be liable for any failure to collect or realize
         the Secured Obligations or any collateral security or guarantee
         therefor, or any part thereof, or for any delay in so doing nor shall
         the Pledgee be under any obligation to take any action whatsoever with
         regard thereto.

4.2      The Pledgor agrees that the Pledgee shall be entitled to reimbursement
         of its expenses incurred hereunder as provided for in Section 9.05 of
         the Credit Agreement.

4.3      Without limitation of its indemnification obligations under the other
         Loan Documents, the Pledgor agrees to indemnify the Pledgee and the
         other Indemnitees (as defined in Section 9.05 of the Credit Agreement)
         against, and hold each Indemnitee harmless from, any and all losses,
         claims, damages, liabilities and related expenses, including reasonable
         counsel fees, taxes, charges and disbursements, incurred by or asserted
         against any Indemnitee arising out of, in connection with, or as a
         result of, (i) the execution, delivery or performance of this Pledge
         Agreement or any other Loan Document or any agreement or instrument
         contemplated hereby or thereby, the performance by the parties hereto
         and thereto of their respective obligations thereunder or the
         consummation of the Transaction and other transactions contemplated
         hereby, (ii) the use of proceeds of the Loans or the use of any Letter
         of Credit or (iii) any claim, litigation, investigation or proceeding
         relating to any of the foregoing, or to the Pledged Collateral, whether
         or not any Indemnitee is a party thereto; provided that such indemnity
         shall not, as to any Indemnitee, be available to the extent that such
         losses, claims, damages, liabilities or related expenses result
         primarily from the gross negligence or willful misconduct of such
         Indemnitee (treating for the purpose of this paragraph 4.3 any Secured
         Party and its Related Parties as a single Indemnitee).

4.4      Any such amounts payable as provided hereunder shall be additional
         Secured Obligations hereunder. The provisions of this Section 4 shall
         remain operative and in full force and effect regardless of the
         termination of this Pledge Agreement or any other Loan Document, the
         consummation of the transactions contemplated hereby, the repayment of
         any of the Secured Obligations, the invalidity or unenforceability of
         any term or provision of this Agreement or any other Loan Document, or
         any investigation made by or on behalf of the Collateral Agent or any
         other Secured Party. All amounts due under this Section 4 shall be
         payable on written demand therefore accompanied by a reasonably
         detailed computation of the amounts so paid.

5.       REMEDIES IN CASE OF A DEFAULT

5.1.     Upon the occurrence of an Event of Default and during its continuation,
         the Pledgee may, without any demand, advertisement or notice of any
         other kind, other than the notice specified in clause 6 below, but
         without notice to any other person in addition to any other remedies
         provided for under this Agreement or by law, realize the Pledged
         Collateral in the most favourable manner provided for by Luxembourg law
         or any part thereof with the right for the Pledgee:

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(i)      to acquire title to the Pledged Collateral following request addressed
         to the competent Luxembourg court, following appraisal made by experts,
         as provided for under article 117 of the Luxembourg Code de Commerce;

(ii)     in respect of such Pledged Collateral which constitutes securities
         (including transferable securities) listed on a stock exchange or dealt
         in on one of the markets defined by article 118 of the Luxembourg Code
         de Commerce, either to cause the sale thereof on the stock exchange or
         on the aforesaid market through the intermediary of a person whom it
         may designate, or to appropriate such Pledged Collateral at the
         prevailing market value;

(iii)    in respect of any Pledged Collateral not listed or quoted on a stock
         exchange nor dealt in one of the markets defined by article 118 of the
         Luxembourg Code the Commerce to cause the sale thereof at a stock
         exchange by public auction held by a public officer designated by the
         Pledgee; and

(iv)     in respect of any Collateral consisting of claims for sums of money, if
         a sum is owed by itself or the Secured Parties, to set off the amount
         due by the Company and the amount due by it or the Secured Parties and,
         if the sum is owed by a third party, to require that third party to
         make payment of the amount due by such third party directly to it, upon
         maturity of the third party debt.

5.2.     The Collateral Agent shall promptly apply the proceeds, moneys or
         balances of any realisation of the Pledged Collateral (or any part
         thereof), as well as any Pledged Collateral consisting of cash, as
         follows:

         FIRST, to the payment of all costs and expenses incurred by the
         Administrative Agent and the Collateral Agent in connection with such
         realisation or otherwise in connection with this Pledge Agreement, any
         other Loan Document or any of the Secured Obligations, including all
         court costs and the fees and expenses of its agents and legal counsel,
         the repayment of all advances made by the Administrative Agent and the
         Collateral Agent hereunder or under any other Loan Document on behalf
         of any Guarantor (as defined in the Holdings Guarantee) or Pledgor and
         any other costs or expenses incurred in connection with the exercise of
         any right or remedy hereunder or under any other Loan Document;

         SECOND, to the payment in full of the Secured Obligations (the amounts
         so applied to be distributed among the Secured Parties pro rata in
         accordance with the respective amounts of the Secured Obligations owed
         to them on the date of any such distribution);

         THIRD, once all the Secured Obligations have been paid in full, to the
         Pledgor, its successors or assigns, or as a court of competent
         jurisdiction may otherwise direct.

5.3.     The Collateral Agent shall have absolute discretion as to the time of
         application of any such proceeds, moneys or balances in accordance with
         this Pledge Agreement.

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6.       FORMAL NOTICE

Upon the occurrence of an Event of Default and during its continuation, the
Pledgee may, after having formally given 3 business days' written notice to the
Pledgor and to the Company either by registered mail, by hand delivery or by
special courier service (such as DHL, TNT, Worldcourrier, etc.), realise the
Pledged Collateral.

For the purpose of the preceding paragraph, a business day shall be a day where
banks are open for business in Luxembourg.

7.       REPRESENTATIONS AND WARRANTIES OF THE PLEDGOR

The Pledgor represents and warrants to the Pledgee that:

7.1.     it is the legal and beneficial owner of, and has good and marketable
         title to, its Pledged CPECs and that the Pledged CPECs are not subject
         to any encumbrance, charge, pledge or other security save as to Liens
         permitted pursuant to Section 6.02 (d), (e) or (q) of the Credit
         Agreement and except for the security created by this Pledge Agreement
         and have not been transferred in any way whatsoever;

7.2.     it has full power and authority to pledge all its Pledged CPECs
         pursuant to this Pledge Agreement;

7.3.     there are no prior agreements purporting to grant to any third party
         any encumbrance on the Pledged Collateral or to transfer the Pledged
         Collateral;

7.4.     the Pledge over the Pledged CPECs and the inscription thereof in the
         register of CPECs holders of the Company pursuant to this Agreement is
         not contrary to any court order applicable to the Pledgor or the
         Company and is not in breach of any agreement to which the Pledgor is a
         party;

7.5.     the Pledge created pursuant to this Agreement constitutes a "first
         priority" security interest over the Pledged CPECs (gage sur actions)
         not subject to any other security interest or attachment or any other
         kind of encumbrance save as may be permitted pursuant to Section 6.02
         (d), (e) or (q) of the Credit Agreement;

7.6.     all necessary consents and authorizations for the execution of this
         Pledge Agreement have been obtained by the Pledgor and are in full
         force and effect;

7.7.     the Pledged CPECs are not subject to any transfer restrictions (other
         than pursuant to the present Pledge Agreement);

7.8.     all the Pledged CPECs are duly issued and fully paid-up and are in
         registered form; and

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7.9.     the Pledged CPECs are not subject to any option to purchase or similar
         rights of any person.

Notwithstanding the foregoing, no Liens shall be permitted to exist, directly or
indirectly, on Pledged Collateral, other than Liens in favour of the Collateral
Agent and Liens permitted by Section 6.02 (d), (e) or (q) of the Credit
Agreement.

8.       NO DISPOSITION, ETC.

8.1.     The Pledgor agrees that, without the prior written consent of the
         Pledgee, it will not sell, assign, transfer, exchange, or otherwise
         dispose of, or grant any option with respect to, the Pledged Collateral
         (or any part thereof) except that no such consent shall be required in
         the case of transfers permitted under the Credit Agreement provided
         however that in each such case the transferee shall prior to such
         transfer have acknowledged this Pledge in writing and shall have agreed
         to assume, jointly with the transferring Pledgor, all obligations of
         the Pledgor hereunder including those arisen and not satisfied prior
         the date of the transfer, nor will it create, incur or permit to be
         created or exist any encumbrance (save as may be permitted pursuant to
         Section 6.02 (d), (e) or (q) of the Credit Agreement or with the prior
         and express written approval of the Pledgee) by contract or otherwise
         with respect to any of the Collateral, or any interest therein, or any
         proceeds thereof, except for the security provided for by this Pledge
         Agreement.

8.2.     The Company notes and acknowledges the above and confirms that it shall
         not register any transfers or encumbrances of the Pledged CEPCs (or
         other part of the Pledged Collateral) (other than pursuant to this
         Pledge Agreement), except with the prior written consent of the
         Pledgee.

9.       PRESERVATION OF SECURITY, RELEASE

9.1.     This Pledge Agreement and the pledge constituted hereby shall terminate
         on the earlier of (x) the first date when all the Secured Obligations
         have been indefeasibly paid in cash and the Lenders have no further
         commitment to lend under the Credit Agreement, the Revolving L/C
         Exposure has been reduced to zero and each Issuing Bank has no further
         obligations to issue Letters of Credit under the Credit Agreement and
         (y) the Restructuring Date provided that prior to any termination
         pursuant to this clause (y), all the equity interests in US Holdco
         shall have been pledged in favor of the Pledgee (A) by the Pledgor to
         the extent it is the direct parent of US Holdco or (B) the Company if
         it is the direct parent of US Holdco, in either case pursuant to a
         pledge agreement governed by New York law in form and substance
         satisfactory to the Pledgee.

9.2.     Following the termination of this Pledge Agreement pursuant to clause
         9.1 above, the Pledgee shall as soon as practicable, at the request and
         cost of the Pledgor, take

                                       12

         whatever action is necessary to release or otherwise discharge the
         Pledged Collateral from the security constituted by this Pledge
         Agreement. Any execution and delivery of documents pursuant to this
         clause 9 shall be without recourse to or warranty by the Pledgee.

9.3.     The Pledge shall be cumulative, in addition to, and independent of
         every other security which the Pledgee or the Secured Parties may at
         any time hold as security for the Secured Obligations or any rights,
         powers and remedies provided by law and shall not operate so as in any
         way to prejudice or affect or be prejudiced or affected by any security
         interest or other right or remedy which the Pledgee or the Secured
         Parties may now or at any time in the future have in respect of the
         Secured Obligations.

9.4.     This Pledge shall not be prejudiced by any time or indulgence granted
         to any person, or any abstention or delay by the Pledgee or any of the
         Secured Parties in perfecting or enforcing any security interest or
         rights or remedies that the Pledgee or the Secured Parties may now or
         at any time in the future have from or against the Pledgor or any other
         person having granted security for the Secured Obligations

9.5.     The Pledgor herby waives any right it may have to first require the
         enforcement of any other right, security or guarantee before the
         enforcement of this Pledge.

9.6.     No failure on the part of the Pledgee to exercise, or delay on its part
         in exercising, any of its rights under this Pledge Agreement shall
         operate as a waiver thereof, nor shall any single or partial exercise
         of any such right preclude any further or other exercise of that or any
         other rights

9.7.     The liability and obligations of the Pledgor hereunder will not be
         affected by an act, omission or circumstance occurring after the
         signature hereof which, but for this provision, would release or
         prejudice any of its obligations hereunder in whole or in part
         including without limitation:

         9.7.1.  any time or waiver granted to, or composition with the Pledgor,
                 or any other person; or

         9.7.2.  the taking, variation, compromise, exchange, renewal or release
                 or refusal or neglect to perfect, take up or enforce, any
                 rights or remedies against, or security over assets of the
                 Pledgor; or

         9.7.3.  any incapacity or lack of powers, authority or legal
                 personality of the Pledgor; or

         9.7.4.  any amendment to, or any variation, waiver or release of, any
                 Secured Obligation or of the obligations of any obligor under
                 any other Loan Document; or

                                       13

         9.7.5.  any failure to take, or fully to take, any security
                 contemplated by the Loan Document or otherwise agreed or
                 contemplated to be taken in respect of the Secured Obligations;
                 or

         9.7.6.  any failure to realise or fully to realise the value of, or any
                 release, discharge, exchange or substitution of, any security
                 taken in respect of the Secured Obligations; or

         9.7.7.  any other act, event or omission which, but for this clause
                 8.6, might operate to discharge, impair or otherwise affect any
                 of the obligations of the Pledgor contained in this Pledge
                 Agreement, the rights, powers and remedies conferred upon the
                 Secured Parties by this Pledge Agreement, the Pledge or by law.

9.8.     For the avoidance of doubt, all rights of the Pledgee hereunder, the
         security interest in the Pledged Collateral and all obligations of the
         Pledgor hereunder shall be absolute and unconditional irrespective of
         (a) any lack of validity or enforceability of the Credit Agreement, any
         other Loan Document, any agreement with respect to any of the Secured
         Obligations or any other agreement or instrument relating to any of the
         foregoing, (b) any change in the time, manner or place of payment of,
         or in any other term of, all or any of the Secured Obligations, or any
         other amendment or waiver of or any consent to any departure from the
         Credit Agreement, any other Loan Document, or any other agreement or
         instrument, (c) any exchange, release or non-perfection of any other
         lien on other collateral, or any release or amendment or waiver of or
         consent under or departure from any guarantee, securing or guaranteeing
         all or any of the Secured Obligations or (d) any other circumstance
         that might otherwise constitute a defence available to, or a discharge
         of, the Pledgor in respect of the Secured Obligations or this Pledge
         Agreement.

9.9.     This Pledge Agreement and the Pledge created hereby shall remain in
         full force and effect despite any amalgation, merger, split or similar
         operation affecting the Pledgee (and for the avoidance of doubt the
         Pledgor) and any reference to the Pledgee includes a reference to any
         successor or assignee or any person which assumes the rights and
         obligations of the Pledgee hereunder or under the Credit Agreement
         (including for the avoidance of doubt in the case of transfer, novation
         or otherwise).

9.10.    For the purpose of article 1278 of the Civil Code and without prejudice
         to this clause the Pledgee expressly reserves the Pledge in the case of
         assignment, novation, amendment or transfer of the Secured Obligations
         or any rights under the Credit Agreement or any other Loan Document. In
         addition and for the avoidance of doubt, the Pledgor hereby waives any
         rights arising for it now or in the future (if any) under Article 2037
         of the Luxembourg Civil Code.

10.      COVENANTS

                                       14

10.1     The Pledgor covenants to the Pledgee that it shall act in good faith to
         maintain and exercise its rights in the Company, and in particular
         shall not knowingly take any steps nor do anything which could be
         reasonably expected to materially and adversely affect the rights of
         the Pledgee, the rights of remedies of the Collateral Agent under this
         Agreement, the Credit Agreement or any other Loan Document or the
         ability of the Pledgee to exercise the same or adversely affect the
         existence of the security interest created hereunder or the value
         thereof or result in the violation of any of the provisions of the
         Credit Agreement.

10.2.    The Pledgor shall cooperate with the Secured Party and sign or cause to
         be signed all such further documents and take all such further action
         as the Secured Party may from time to time reasonably request to
         perfect and protect this Pledge and to carry out the provisions and
         purposes of this Pledge Agreement and save as may be permitted pursuant
         to Section 6.02 (d), (e) or (q) of the Credit Agreement.

10.3.    The Pledgor is, and will be, the sole owner of its Pledged CPECs free
         from any encumbrance, except as created in favour of the Secured
         Parties by this Pledge Agreement.

11.      FURTHER ASSURANCES

         The Pledgor irrevocably appoints the Pledgee to be its attorney and in
         its name and on its behalf to execute, deliver and perfect all
         documents and do all things that the Secured Party may consider to be
         requisite for (a) carrying out any obligation imposed on the Pledgor
         under this Pledge Agreement which the Pledgor has failed to carry out
         or (b) perfecting or maintaining the security interest created
         hereunder. The Pledgor shall ratify and confirm all things done and all
         documents executed by the Pledgee in the exercise of that power of
         attorney.

12.      COUNTERPARTS

This Pledge Agreement may be executed in counterparts (and by different parties
hereto on different counterparts), each of which shall constitute an original,
but all of which when taken together shall constitute a single contract.
Delivery of an executed counterpart of a signature page to this Agreement by
telecopy shall be effective as delivery of a manually executed counterpart of
this Pledge Agreement.

13.      SEVERABILITY

Any provision of this Pledge Agreement that is prohibited or unenforceable in
any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of
such prohibition or unenforceability without invalidating the remaining
provisions hereof, and any such

                                       15

prohibition or unenforceability in any jurisdiction shall not invalidate or
render unenforceable such provision in any other jurisdiction.

14.      NO WAIVER; CUMULATIVE REMEDIES

For the avoidance of doubt, the Pledgee shall not by any act, delay, omission or
otherwise be deemed to have waived any of its rights or their remedies hereunder
and no waiver shall be valid unless in writing, signed by or on behalf of the
Pledgee, and then only to the extent therein set forth. A waiver by or on behalf
of the Pledgee of any right or remedy hereunder on any one occasion shall not be
construed as a bar to any right or remedy which the Pledgee would otherwise have
on any future occasion. No failure to exercise nor any delay in exercising on
the part of the Pledgee, any right, power or privileges hereunder, shall operate
as a waiver thereof; nor shall any single or partial exercise of any right,
power or privilege hereunder preclude any other or further exercise thereof or
the exercise of any other right, power or privilege. The rights and remedies
herein provided are cumulative and may be exercised singly or concurrently, and
are not exclusive of any rights or remedies provided by law.

15.      WAIVERS, AMENDMENTS

Neither this Pledge Agreement nor any terms or conditions hereof may be amended,
changed, waived, discharged, terminated or otherwise modified unless such
amendment, change, waiver, discharge, termination or modification is in writing
and is otherwise in accordance with the terms of this Pledge Agreement. None of
the terms or provisions of this Pledge Agreement may be waived, altered,
modified or amended except by an instrument in writing, duly executed by or on
behalf of the Pledgee and the Pledgor.

16.      ASSIGNMENT

The Pledgor may not assign or transfer all or any part of its rights or
obligations hereunder except with the express written consent of the Pledgee.
The Pledgee may assign all or any of its respective rights hereunder with the
consent of the Pledgor, which consent shall not be unreasonably withheld and any
successor to or assignee of the Pledgee shall be entitled to the full benefits
hereof. In the event of an assignment by the Pledgor with the express written
consent of the Pledgee any assignee or successor of the Pledgor shall assume,
jointly with the assigning Pledgor or the Pledgor it succeeds, as the case may
be, all obligations of the Pledgor hereunder including those arisen and not
satisfied prior the date of the assignment or succession thereto.

17.    RIGHTS OF RECOURSE

17.1.  The Pledgor hereby formally waives and renounces to exercise any Rights
       of Recourse or any other rights it may have against any obligor or
       Security Grantor pursuant to the Credit Agreement or other Loan Documents
       in any manner (including for the avoidance

                                       16

       of doubt, by way of provisional measures such as provisional attachment
       ("saisie-arret conservatoire") or by way of set-off.

17.2.  The Pledgor acknowledges that this waiver is of essence for the Pledgee
       and the Secured Parties and it is agreed that this clause shall survive
       any termination or discharge of this Pledge Agreement.

18.      NOTICES

Every notice, request, demand or other communication under this Agreement shall
be given:

(1)      to the Pledgor at:

BCP CRYSTAL HOLDINGS Ltd. 2,
For the attention of the Directors
c/o Parent
29 rue Eugene Ruppert
L-2453 Luxembourg

with a copy to Blackstone Capital Partners Cayman IV L.P. 345 Park Avenue, New
York, New York 10154

(2)      to the Pledgee at:

Deutsche Bank AG, New York Branch,
60 Wall Street,
New York, New York 10005,
attention: Carin Keegan
(telecopy: (212) 797-5696) (e-mail: carin.keegan@db.com),

with a copy to:White & Case LLP, 1155 Avenue of the Americas, New York, New York
10036, attention: Sean Geary, Esq. (telecopy: (212) 354-8113);

(3)      to the Company at:

BCP CAYLUX HOLDINGS LUXEMBOURG S.C.A.
For the attention of the Manager
8 rue Mathias Hardt
L-1717 Luxembourg

with a copy to Blackstone Capital Partners Cayman IV L.P. 345 Park Avenue, New
York, New York 10154 and to 29 rue Eugene Ruppert L-2453 Luxembourg.

or to such other address or facsimile or telex number as is notified by any
party to the other parties to this Pledge Agreement.

                                       17

Every notice, request, demand or other communication under this Pledge Agreement
shall be deemed to have occurred when received.

19.      EXPENSES AND STAMP DUTY

The Pledgor shall indemnify and keep indemnified the Pledgee against all costs,
charges, fees and expenses (including legal fees, stamp duties and any value
added tax) incurred in connection with the negotiation, preparation, execution,
registration, implementation and preservation and amendments, waivers or
consents of this Pledge Agreement and all costs, charges, fees and expenses
incurred in connection with the enforcement of this Pledge Agreement (in each
case including fees for legal advisers to the Pledgee) shall be reimbursed to
the Secured Party by the Pledgor upon 2 business days notice.

For the avoidance of doubt, all costs and charges incurred as a result of the
creation of the Pledge, the perfection thereof, and any other costs and charges
incurred as a result of this Pledge Agreement or the enforcement thereof shall
be borne by the Pledgor.

20.      GOVERNING LAW; JURISDICTION CLAUSE

20.1.    This Pledge Agreement shall be governed by, and construed in accordance
         with the laws of Luxembourg.

20.2.    The parties hereby irrevocably submit to the exclusive jurisdiction of
         the Luxembourg courts in connection with any disputes arising under
         this Pledge Agreement.

21.      PROCESS AGENT

Without prejudice to any other mode of process, the Pledgor hereby irrevocably:

21.1     appoints the Company, which hereby accepts such appointment, as its
         agent for service of process relating to any proceedings before the
         Luxembourg courts in connection with this Pledge Agreement;

21.2.    agrees that failure by its process agent to notify it of the process
         will not invalidate the proceedings concerned.

IN WITNESS WHEREOF, each party has executed and delivered this Agreement in
three originals by its duly authorized officer as of the day and year first
above written.

                                       18

/s/ Martin Brand
----------------------------
FOR AND BEHALF OF
BCP CRYSTAL HOLDINGS LTD. 2
BY: Martin Brand
TITLE: Director

THE PLEDGOR

                                       19

/s/ Albert Fischetti      /s/ Robert Wheeler
--------------------------------------------
FOR AND BEHALF OF THE PLEDGEE
DEUTSCHE BANK AG, NEW YORK BRANCH,
as Pledgee and Collateral Agent for the benefit of the Secured Parties
on behalf of the Secured Parties
(and for the avoidance of doubt their permitted successors and assigns)
BY:    Albert Fischetti       Robert Wheeler
TITLE: Director               Director

                                       20

The Company acknowledges and accepts the existence of this Agreement and the
Pledge created over the Pledged CPECs, takes notice of, and agrees to, the terms
thereof, takes notice and agrees to its obligations thereunder and without
limitation undertakes to duly register this Pledge pursuant to its terms in its
register of CPECs holders and to provide the Pledgee with a copy of the register
evidencing such the registration.

/s/ Martin Brand
----------------------------
FOR AND BEHALF OF THE COMPANY
BCP CAYLUX HOLDINGS LUXEMBOURG S.C.A. acting through
BCP CAYLUX HOLDINGS LTD 1,  the General Partner and Manager of the Company
BY: Martin Brand
TITLE: Director

                                       21Exhibit 10.9

                          PARENT SHARE PLEDGE AGREEMENT

                                 BY AND BETWEEN

                           BCP CRYSTAL HOLDINGS LTD. 2

                           BCP CRYSTAL (CAYMAN) LTD.1

                                   as Pledgors

                                       and

                       DEUTSCHE BANK AG, NEW YORK BRANCH,
                         as Pledgee and Collateral Agent

                                       and

                     BCP CAYLUX HOLDINGS LUXEMBOURG S.C.A.,
                                 as the Company

THIS PLEDGE AGREEMENT is dated April 6, 2004 and made by and between:

(1)  BCP CRYSTAL HOLDINGS LTD. 2, a company organized under the laws of the
     Cayman Islands, with registered office at c/o Walkers SPV Limited, Walker
     House, PO Box 908 GT, Mary Street, George Town, Grand Cayman, Cayman
     Islands ("BCP Crystal");

(2)  BCP CRYSTAL CAYMAN LTD. 1, a company organized under the laws of the Cayman
     Islands, with registered office at c/o Walkers SPV Limited, Walker House,
     PO Box 908 GT, Mary Street, George Town, Grand Cayman, Cayman Islands ("BCP
     Crystal Cayman")

(hereinafter collectively referred to as the "Pledgors" and each a "Pledgor"),

And

(3)  DEUTSCHE BANK AG, NEW YORK BRANCH, the New York branch of a German banking
     corporation, on its own behalf and as collateral agent for the benefit of
     the Secured Parties (as defined below), (hereinafter the "Pledgee" or the
     "Collateral Agent");

And

(4)  BCP CAYLUX HOLDINGS LUXEMBOURG S.C.A., a corporate partnership limited by
     shares (societe en commandite par actions) incorporated under the laws of
     the Grand-Duchy of Luxembourg, whose registered office is at 8-10, rue
     Mathias Hardt, L-1717 Luxembourg and registered at the Luxembourg
     Companies' Registrar under number B 96771 (hereinafter the "Company" or
     "Parent") acting through its general partner and manager, BCP Caylux
     Holdings Ltd 1, an exempted company governed by the laws of the Cayman
     Islands with registered office at c/o Walkers SPV Limited, Walker House, PO
     Box 908 GR, Mary Street, George Town, Grand Cayman, Cayman Islands ( the
     "General Partner and Manager")

WHEREAS

A    The Company has as of the date hereof an issued share capital of 34,000
     Euro represented by 1 registered share held by the General Partner and
     Manager (the "GP Shares") and of 1,359 limited partners' shares, of a
     nominal value of 25 each;

B.   The Pledgors own in aggregate 1,359 registered limited partners shares
     representing all but one of the Shares in the issued capital of the Company
     (excluding for the avoidance of doubt the GP Share);

                                       2

C.   BCP Crystal, the Company, Celanese Americas Corporation ("CAC"), certain
     other subsidiaries of BCP Crystal from time to time party thereto as
     borrowers under the Revolving Facility provided for in the Credit Agreement
     (as defined below) (the "Subsidiary Revolving Borrowers" and together with
     CAC and Parent , the "Borrowers"), the Lenders party thereto from time to
     time (the "Lenders"), MORGAN STANLEY SENIOR FUNDING, INC., as global
     coordinator, DEUTSCHE BANK AG, NEW YORK BRANCH, as administrative agent and
     as collateral agent for the Lenders, and DEUTSCHE BANK SECURITIES INC. and
     MORGAN STANLEY SENIOR FUNDING, INC., as joint lead arrangers have entered
     into a Credit Agreement dated as of April 6, 2004 as amended, supplemented,
     waived or otherwise modified from time to time (the "Credit Agreement").

D.   The Lenders have agreed to extend credit to the Borrowers subject to the
     terms and conditions set forth in the Credit Agreement. The obligations of
     the Lenders to extend such credit are conditioned upon, among other things,
     the execution and delivery of this Pledge Agreement. The Pledgors are all
     the limited partners of the Parent, will derive substantial benefits from
     the extension of credit to the Borrowers pursuant to the Credit Agreement
     and are each willing to execute and deliver this Pledge Agreement and to
     pledge all their Shares (and for the avoidance of doubt the Collateral, if
     different from the Shares) in the Parent to secure any and all of the
     Secured Obligations in order to induce the Lenders to extend such credit.

NOW, THEREFORE, the each of the Pledgors hereby agree with the Pledgee as
follows:

1.   DEFINITIONS AND INTERPRETATION

1.1. Unless otherwise defined herein or the context otherwise requires,
     capitalised terms used in this Pledge Agreement, including its preamble and
     recitals, have the meanings provided in the Credit Agreement.

"CREDIT AGREEMENT" shall have the meaning as set out in the recitals hereto.

"EVENT OF DEFAULT" has the meaning given to it by the Credit Agreement.

"HOLDINGS GUARANTEE" means the Guarantee and Pledge Agreement between Holdings,
each Intermediate HoldCo and Collateral Agent.

"CREDIT AGREEMENT" shall have the meaning as set out in the recitals hereto.

"EVENT OF DEFAULT" has the meaning given to it by the Credit Agreement.

"HOLDINGS GUARANTEE" means the Guarantee and Pledge Agreement between Holdings,
each Intermediate HoldCo and the Collateral Agent.

"LOAN DOCUMENT OBLIGATIONS" means (a) the due and punctual payment by each
Borrower of (i) the unpaid principal of and interest (including interest
accruing during the pendency of any bankruptcy, insolvency, receivership or
other similar proceeding, regardless of whether allowed or allowable in such
proceeding) on the Loans made to such Borrower, when and as due, whether at
maturity, by acceleration, upon one or more dates set for prepayment or
otherwise, (ii) each payment required to be made by any Borrower under the
Credit Agreement in respect of any Letter of Credit, when and as due, including
payments in respect of reimbursement of disbursements, interest thereon

                                       3

(including interest accruing during the pendency of any bankruptcy, insolvency,
receivership or other similar proceeding, regardless of whether allowed or
allowable in such proceeding) and obligations to provide cash collateral and
(iii) all other monetary obligations of any Borrower to any of the Secured
Parties under the Credit Agreement and each of the other Loan Documents,
including obligations to pay fees, expense and reimbursement obligations and
indemnification obligations, whether primary, secondary, direct, contingent,
fixed or otherwise (including monetary obligations incurred during the pendency
of any bankruptcy, insolvency, receivership or other similar proceeding,
regardless of whether allowed or allowable in such proceeding) and (b) the due
and punctual performance of all other obligations of the Borrowers under or
pursuant to the Credit Agreement, this Pledge Agreement, the Holdings Guarantee
and each of the other Loan Documents.

"PLEDGED COLLATERAL" means the Shares, the Future Shares and any Related Assets.

"RELATED ASSETS" means all dividends, interest and other monies payable in
respect of the Shares and all other rights, benefits and proceeds in respect of
or derived from the Shares (whether by way of redemption, bonus, preference,
option, substitution, conversion or otherwise) except to the extent these
constitute Shares.

"RIGHTS OF RECOURSE" means all and any rights, actions and claims the Pledgors
may have against (i) the obligors under the Credit Agreement or other Loan
Documents and (ii) any entity having granted security or given a guarantee for
such obligors' obligations under the Loan Documents (the "SECURITY GRANTOR")
arising under or pursuant to the enforcement of the present pledge including, in
particular, the Pledgors' right of recourse against the such obligors under the
terms of Article 2028ff. of the Civil Code (including, for the avoidance of
doubt, any right of recourse prior to enforcement), or any right of recourse by
way of subrogation or any other similar right, action or claim under any
applicable law.

"SECURED OBLIGATIONS" means (a) the Loan Document Obligations, (b) the due and
punctual payment and performance of all obligations of the Pledgors owing to the
Secured Parties under and pursuant to this Pledge Agreement, the Series A and
Series B CPECS Pledge Agreement, (c) the due and punctual payment and
performance of all the obligations of any of the Pledgors under and pursuant to
the Holdings Guarantee (d) the due and punctual payment and performance of all
obligations of any Borrower under each Swap Agreement that (i) is in effect on
the Closing Date with a counterparty that is a Lender or an Affiliate of a
Lender as of the Closing Date or (ii) is entered into after the Closing Date
with any counterparty that is a Lender or an Affiliate of a Lender at the time
such Swap Agreement is entered into, and (e) the due and punctual payment and
performance of all obligations of any Borrower and any of its subsidiaries in
respect of overdrafts and related liabilities owed to a Lender or any of its
Affiliates and arising from cash management services (including treasury,
depository, overdraft, credit or debit card, electronic funds transfer and other
cash management arrangements).

"SECURED PARTIES" means (a) the Lenders (and any Affiliate of a Lender to which
any

                                       4

obligation referred to in clause (d) and (e) of the definition of the term
"Secured Obligations" is owed), (b) the Administrative Agent and the Collateral
Agent, (c) each Issuing Bank, (d) each counterparty to any Swap Agreement
entered into with a Loan Party the obligations under which constitute Secured
Obligations, (e) the beneficiaries of each indemnification obligation undertaken
by any Loan Party under any Loan Document and (f) the successors and permitted
assigns of each of the foregoing.

"SERIES A AND B CPECS PLEDGE AGREEMENT" means the pledge agreement of even date
herewith between Holdings and the Pledgee with respect to the Series A
Convertible Preferred Equity Certificates and the Series B Convertible Preferred
Equity Certificates, each issued by the Company.

"SHARES" means all the limited partners' shares regardless of class in the share
capital of the Company held by, to the order or on behalf of anyone of the
Pledgors at any time, including for the avoidance of doubt any shares of the
Company which shall be issued to anyone of the Pledgors from time to time,
regardless of the reason of such issuance, whether by way of substitution,
replacement, dividend or in addition to the shares held on the date hereof,
whether following an exchange, division, free attribution, contribution in kind
or in cash or for any other reason (the "Future Shares"), in which case such
Future Shares shall immediately be and become subject to the security interest
created hereunder (and be part of the Shares).

1.2. Nothing in this Agreement shall be construed as limiting any of the rights
     and remedies under the Credit Agreement, unless expressly set forth herein.

1.3. The rules of construction specified in Section 1.02 of the Credit Agreement
     also apply to this Pledge Agreement.

1.4. For the avoidance of doubt, whenever in this Pledge Agreement any of the
     parties hereto is referred to, such reference shall be deemed to include
     the successors and assigns of such party; and all rights and obligations of
     the Pledgors (or anyone thereof) or the Pledgee that are contained in this
     Pledge Agreement shall bind and inure to the benefit of their respective
     successors and assigns.

1.5. Headings and the Index used herein are for convenience of reference only
     and are not to affect the construction of, or to be taken into
     consideration in interpreting, this Pledge Agreement

2.   PLEDGE

2.1. As continuing security for the due and punctual performance, and the
     payment when due and discharge, of the Secured Obligations, each of the
     Pledgors hereby pledge as a first priority pledge to the Pledgee, who
     accepts, any and all of its Shares in the issued share capital of the
     Company of whatever nature, existing or to be acquired by such Pledgor and
     owned by such

                                       5

     Pledgor (including for the avoidance of doubt, any Future Shares) (the
     "Pledged Shares") and each of the Pledgors hereby grant to the Pledgee, a
     first ranking security on such Pledged Shares and in all proceeds thereof
     in respect of or in exchange or replacement for the Pledged Shares (the
     "Pledge") as collateral security for the prompt and complete payment and
     discharge of the Secured Obligations and transfers the Pledged Shares by
     way of security (gage) (pursuant to article 114(3)(c) of the Commercial
     Code) to the Pledgee .

2.2. The Pledgee accepts the Pledge and transfer by way of security (gage) and
     the Company acknowledges and accepts the Pledge for purposes of article
     1690 of the Luxembourg Civil Code and article 114 of the Commercial Code.

2.3. The Pledgors shall simultaneously herewith, or in the case of any
     shareholdings issued to anyone of the Pledgors after the date hereof (i.e.
     any Future Shares), immediately upon the issue thereof to anyone of the
     Pledgors procure the inscription of the Pledge and the transfer by way of
     security (gage) in accordance with article 114 (3) (c) of the Commercial
     Code in favour of the Pledgee in the register of shareholders of the
     Company and provide the Pledgee with a written confirmation from the
     Company (together with a certified copy of the relevant pages in the
     register) that these inscriptions have been duly made. For the avoidance of
     doubt the Pledgors and the Pledgee hereby request and instruct the Company
     to immediately register the Pledge in the register of shareholders of the
     Company.

     Without prejudice to the above provisions, the Pledgors hereby irrevocably
     authorise and empower the Pledgee to cause any formal steps to be taken by
     the General Partner and Manager of the Company for the purpose of further
     perfecting the present Pledge and, for the avoidance of doubt, undertake to
     take any such steps itself if so directed by the Pledgee. In particular,
     should any such steps be required in relation to Future Shares of the
     Company or Related Assets, the Pledgors undertake to take any such steps
     immediately upon issuance or receipt of such Future Shares of the Company
     or Related Assets, and, where possible, to instruct the Company to take any
     such steps, without prejudice to the right of the Pledgee pursuant to the
     first sentence hereof.

2.4. The Pledgors, the Pledgee and the Company jointly instruct the General
     Partner and Manager of the Company and Me Pierre Beissel and Me Benedicte
     Kurth (each of Arendt and Medernach), each acting without the other and
     with full power of substitution, as proxy to register the Pledge and to
     inscribe the Pledge in favour of the Pledgee in the register of
     shareholders of the Company.

     The text to be used for the inscriptions shall be the following with the
     indications:

     "Pursuant to the Parent Share Pledge Agreement dated [ ] 2004 between BCP
     Crystal Holdings Ltd 2and BCP Crystal (Cayman) Ltd. 1 as Pledgors, Deutsche
     Bank AG, New York Branch as Pledgee and the Company, [name relevant
     Pledgor] has pledged and transferred by way of security pursuant to article
     114.3(c) of the Commercial Code, all its right, title, interest and
     benefit, present and future, on, to and

                                       6

     under all of its Shares (as well as any Future Shares) and all its right,
     title, interest and benefit, present and future, in and to all proceeds
     which may from time to time and at any time be distributed or derived from,
     or accrue on or arise in respect of or related to said Shares, as first
     ranking security to Deutsche Bank AG, New York Branch (on its on behalf and
     as collateral agent for the benefit of the Secured Parties).

     [Signature]"

2.6. This Pledge shall be in addition to and independent of any other pledge,
     guarantee, or other security given in respect of the Secured Obligations.

2.7. The Pledge created hereby shall not be affected in any way by any
     variation, amendment, extension, waiver, compromise or release of any or
     all of the Secured Obligations, the Credit Agreement, the Holdings
     Guarantee, the Series A and Series B CPECS Pledge Agreement, any Loan
     Document, or of any security from time to time therefore. To the extent it
     can be avoided by any action of any of the Pledgors or otherwise, the
     Pledge created herein shall no be affected by any change in the laws, rules
     or regulations of any jurisdiction or by any present or future action of
     any governmental authority or court.

2.8. The Pledgors shall forthwith, upon execution hereof, deposit with the
     Pledgee all certificates and documents of title to the Shares, if any.

3.   VOTING RIGHTS AND OTHER RIGHTS OF THE PLEDGEE

3.1. Until the occurrence of an Event of Default that is continuing (as, for the
     avoidance of doubt, defined in the Credit Agreement), and following a
     notice being issued by the Collateral Agent in accordance with clause 6
     below, the full voting powers in respect of the Pledged Shares shall, as
     from the date of this Pledge Agreement, be exercised on all matters by the
     Pledgors, provided however, that the Pledgors shall only exercise such
     right in a manner which does not adversely affect the Pledge and the rights
     of the Pledgee hereunder and that no vote shall be cast, or consent, waiver
     or ratification given or action taken, which could reasonably be expected
     to materially and adversely affect the rights of the Pledgee, the rights of
     remedies of the Collateral Agent under this Agreement, the Credit Agreement
     or any other Loan Document or the ability of the Pledgee to exercise the
     same.

3.2. The Pledgee shall receive a copy of any shareholder notifications, notices
     or information and the Company undertakes to provide the Pledgee therewith
     in good time (and in any event no later than the same is provided for the
     Pledgors or any other shareholder).

3.3. After an Event of Default shall have occurred and is continuing, and
     following a notice being issued by the Collateral Agent in accordance with
     clause 6 below, such voting and other powers shall be exercised by the
     Pledgee in such manner as he sees fit

                                       7

     subject to complying with any applicable formalities provided for by law.
     For the avoidance of doubt, the Pledgee shall have the right following the
     occurrence and continuation of an Event of Default to act as each of the
     Pledgors irrevocable proxy and for as long as there are any Secured
     Obligations outstanding, to represent each of the Pledgors at any
     shareholders' meeting and exercise the voting rights in any manner the
     Pledgee reasonably deems fit for the purpose of protecting or enforcing the
     rights of the Pledgee hereunder. Each of the Pledgors shall do whatever is
     necessary in order to ensure that the exercise of the voting rights in
     these circumstances is facilitated and becomes possible for the Pledgee,
     including but not limited to the issuance of a written proxy in any form
     required by applicable law.

3.4. Each of the Pledgors and the Company hereby expressly acknowledge that the
     Pledgee shall, following the occurrence and continuation of an Event of
     Default, and following a notice being issued by the Collateral Agent in
     accordance with clause 6 below, pursuant to and in accordance with Section
     3.3 be unconditionally authorised to exercise any voting rights attached to
     the Pledged Shares in any manner necessary or useful for the purposes of
     ensuring the complete satisfaction of the obligations under the Credit
     Agreement and each of the Pledgors and the Company hereby waive any claim
     the Pledgors or the Company may have in this respect, in particular with
     respect to any liability of the Pledgee, except in cases of wilful
     misconduct or gross negligence of the Pledgee.

3.5. Upon the occurrence of an Event of Default that is continuing and following
     a notice being issued by the Collateral Agent in accordance with clause 6
     below, all rights to future dividends and other future cash proceeds
     receivable in connection with the Pledged Shares shall automatically be
     transferred to the Pledgee.

4.   RIGHTS OF THE PLEDGEE, LIABILITY, INDEMNIFICATION

4.1. The Pledgee shall not be liable for any failure to collect or realize the
     Secured Obligations or any collateral security or guarantee therefor, or
     any part thereof, or for any delay in so doing nor shall the Pledgee be
     under any obligation to take any action whatsoever with regard thereto.

4.2  The Pledgors agree that the Pledgee shall be entitled to reimbursement of
     its expenses incurred hereunder as provided for in Section 9.05 of the
     Credit Agreement.

4.3  Without limitation of its indemnification obligations under the other Loan
     Documents, each Pledgor agrees to indemnify the Pledgee and the other
     Indemnitees (as defined in Section 9.05 of the Credit Agreement) against,
     and hold each Indemnitee harmless from, any and all losses, claims,
     damages, liabilities and related expenses, including reasonable counsel
     fees, taxes, charges and disbursements, incurred by or asserted against any
     Indemnitee arising out of, in connection with, or as a result of, (i) the
     execution, delivery or performance of this Pledge Agreement or any other
     Loan Document or any agreement or instrument contemplated hereby or
     thereby, the

                                       8

     performance by the parties hereto and thereto of their respective
     obligations thereunder or the consummation of the Transaction and other
     transactions contemplated hereby, (ii) the use of proceeds of the Loans or
     the use of any Letter of Credit or (iii) any claim, litigation,
     investigation or proceeding relating to any of the foregoing, or to the
     Pledged Collateral, whether or not any Indemnitee is a party thereto;
     provided that such indemnity shall not, as to any Indemnitee, be available
     to the extent that such losses, claims, damages, liabilities or related
     expenses result primarily from the gross negligence or willful misconduct
     of such Indemnitee (treating for the purpose of this paragraph 4.3 any
     Secured Party and its Related Parties as a single Indemnitee).

4.4  Any such amounts payable as provided hereunder shall be additional Secured
     Obligations secured hereunder. The provisions of this Section 4 shall
     remain operative and in full force and effect regardless of the termination
     of this Pledge Agreement or any other Loan Document, the consummation of
     the transactions contemplated hereby, the repayment of any of the Secured
     Obligations, the invalidity or unenforceability of any term or provision of
     this Agreement or any other Loan Document, or any investigation made by or
     on behalf of the Collateral Agent or any other Secured Party. All amounts
     due under this Section 4 shall be payable on written demand therefor
     accompanied by a reasonably detailed computation of the amounts so paid.

5.   REMEDIES IN CASE OF A DEFAULT

5.1. Upon the occurrence of an Event of Default and during its continuation, the
     Pledgee may, without any demand, advertisement or notice of any other kind,
     other than the notice specified in clause 6 below, but without notice to
     any other person, in addition to any other remedies provided for under this
     Agreement or by law, realize the Pledged Collateral in the most favourable
     manner provided for by Luxembourg law or any part thereof with the right
     for the Pledgee:

(i)  to acquire title to the Pledged Collateral following request addressed to
     the competent Luxembourg court, following appraisal made by experts, as
     provided for under article 117 of the Luxembourg Code de Commerce;

(ii) in respect of such Pledged Collateral which constitutes securities
     (including transferable securities) listed on a stock exchange or dealt in
     on one of the markets defined by article 118 of the Luxembourg Code de
     Commerce, either to cause the sale thereof on the stock exchange or on the
     aforesaid market through the intermediary of a person whom it may
     designate, or to appropriate such Pledged Collateral at the prevailing
     market value;

(iii) in respect of any Pledged Collateral not listed or quoted on a stock
     exchange nor dealt in one of the markets defined by article 118 of the
     Luxembourg Code the Commerce to cause the sale thereof at a stock exchange
     by public auction held by a public officer designated by the Pledgee; and

                                       9

(iv) in respect of any Pledged Collateral consisting of claims for sums of
     money, if a sum is owed by itself or the Secured Parties, to set off the
     amount due by the Company and the amount due by it or the Secured Parties
     and, if the sum is owed by a third party, to require that third party to
     make payment of the amount due by such third party directly to it, upon
     maturity of the third party debt.

5.2. The Collateral Agent shall promptly apply the proceeds, moneys or balances
     of any realisation of the Pledged Collateral (or any part thereof), as well
     as any Pledged Collateral consisting of cash, as follows:

     FIRST, to the payment of all costs and expenses incurred by the
     Administrative Agent and the Collateral Agent in connection with such
     realisation or otherwise in connection with this Pledge Agreement, any
     other Loan Document or any of the Secured Obligations, including all court
     costs and the fees and expenses of its agents and legal counsel, the
     repayment of all advances made by the Administrative Agent and the
     Collateral Agent hereunder or under any other Loan Document on behalf of
     any Guarantor (as defined in the Holdings Guarantee) or Pledgor and any
     other costs or expenses incurred in connection with the exercise of any
     right or remedy hereunder or under any other Loan Document;

     SECOND, to the payment in full of the Secured Obligations (the amounts so
     applied to be distributed among the Secured Parties pro rata in accordance
     with the respective amounts of the Secured Obligations owed to them on the
     date of any such distribution);

     THIRD, once all the Secured Obligations have been paid in full, to the
     respective Pledgors (as their interest may be), their successors or
     assigns, or as a court of competent jurisdiction may otherwise direct.

5.3. The Collateral Agent shall have absolute discretion as to the time of
     application of any such proceeds, moneys or balances in accordance with
     this Pledge Agreement.

6.   FORMAL NOTICE

Upon the occurrence of an Event of Default and during its continuation, the
Pledgee may, after having formally given 3 business days' written notice to the
Pledgors and to the Company either by registered mail, by hand delivery or by
special courier service (such as DHL, TNT, Worldcourrier, etc.), realise the
Pledged Collateral.

For the purpose of the preceding paragraph, a business day shall be a day where
banks are open for business in Luxembourg.

                                       10

7.   REPRESENTATIONS AND WARRANTIES OF THE PLEDGORS

Each of the Pledgors represents and warrants to the Pledgee that:

7.1. it is the legal and beneficial owner of, and has good and marketable title
     to, its Pledged Shares and that the Pledged Shares are not subject to any
     encumbrance, charge, pledge or other security save as to Liens permitted
     pursuant to Section 6.02 (d), (e) or (q) of the Credit Agreement and except
     for the security created by this Pledge Agreement, and have not been
     transferred in any way whatsoever;

7.2. it has full power and authority to pledge all its Pledged Shares pursuant
     to this Pledge Agreement;

7.3. there are no prior agreements purporting to grant to any third party any
     encumbrance on the Pledged Collateral or to transfer the Pledged
     Collateral;

7.4. the Pledge over the Pledged Shares and the inscription thereof in the
     register of shareholders of the Company pursuant to this Agreement is not
     contrary to any court order applicable to the Pledgors or the Company and
     is not in breach of any agreement to which either of the Pledgors is a
     party;

7.5. the Pledge created pursuant to this Agreement constitutes a "first
     priority" security interest over the Pledged Shares (gage sur actions) not
     subject to any other security interest or attachment or any other kind of
     encumbrance save as may be permitted pursuant to Section 6.02 (d), (e) or
     (q) of the Credit Agreement;

7.6. all necessary consents and authorizations for the execution of this Pledge
     Agreement have been obtained by the Pledgors and are in full force and
     effect;

7.7. the Pledged Shares are not subject to any transfer restrictions (other than
     pursuant to the present Pledge Agreement);

7.8. all the Pledged Shares are duly issued and fully paid-up and are in
     registered form; and

7.9. the Pledged Shares are not subject to any option to purchase or similar
     rights of any person.

Notwithstanding the foregoing, no Liens shall be permitted to exist, directly or
indirectly, on Pledged Collateral, other than Liens in favour of the Collateral
Agent and Liens permitted by Section 6.02 (d), (e) or (q) of the Credit
Agreement.

8.   NO DISPOSITION, ETC.

8.1. Each of the Pledgors agrees that, without the prior written consent of the
     Pledgee, it will not sell, assign, transfer, exchange, or otherwise dispose
     of, or grant any option

                                       11

     with respect to, the Pledged Collateral (or any part thereof) except that
     no such consent shall be required in the case of transfers permitted under
     the Credit Agreement provided however that in each such case the transferee
     shall prior to such transfer have acknowledged this Pledge in writing and
     shall have agreed to assume, jointly with the transferring Pledgor, all
     obligations of the Pledgors hereunder including those arisen and not
     satisfied prior the date of the transfer, nor will it create, incur or
     permit to be created or exist any encumbrance (save as may be permitted
     pursuant to Section 6.02 (d), (e) or (q) of the Credit Agreement or with
     the prior and express written approval of the Pledgee) by contract or
     otherwise with respect to any of the Pledged Collateral, or any interest
     therein, or any proceeds thereof, except for the security provided for by
     this Pledge Agreement.

8.2. The Company notes and acknowledges the above and confirms that it shall not
     register any transfers or encumbrances of the Pledged Shares (or other part
     of the Pledged Collateral) (other than pursuant to this Pledge Agreement),
     except with the prior written consent of the Pledgee.

9.   PRESERVATION OF SECURITY, RELEASE

9.1. This Pledge Agreement and the pledge constituted hereby shall terminate on
     the earlier of (x) the first date when all the Secured Obligations have
     been indefeasibly paid in cash and the Lenders have no further commitment
     to lend under the Credit Agreement, the Revolving L/C Exposure has been
     reduced to zero and each Issuing Bank has no further obligations to issue
     Letters of Credit under the Credit Agreement and (y) the Restructuring Date
     provided that prior to any termination pursuant to this clause (y), all the
     equity interests in US Holdco shall have been pledged in favor of the
     Pledgee (A) by the Pledgors to the extent one or more of them are the
     direct parent of US Holdco or (B) the Company if it is the direct parent of
     US Holdco, in either case pursuant to a pledge agreement governed by New
     York law in form and substance satisfactory to the Pledgee

9.2. Following the termination of this Pledge Agreement pursuant to clause 9.1
     above, the Pledgee shall as soon as practicable, at the request and cost of
     the Pledgors, take whatever action is necessary to release or otherwise
     discharge the Pledged Collateral from the security constituted by this
     Pledge Agreement. Any execution and delivery of documents pursuant to this
     clause 9 shall be without recourse to or warranty by the Pledgee.

9.3. The Pledge shall be cumulative, in addition to, and independent of every
     other security which the Pledgee or the Secured Parties may at any time
     hold as security for the Secured Obligations or any rights, powers and
     remedies provided by law and shall not operate so as in any way to
     prejudice or affect or be prejudiced or affected by any security interest
     or other right or remedy which the Pledgee or the Secured Parties may now
     or at any time in the future have in respect of the Secured Obligations.

                                       12

9.4. This Pledge shall not be prejudiced by any time or indulgence granted to
     any person, or any abstention or delay by the Pledgee or any of the Secured
     Parties in perfecting or enforcing any security interest or rights or
     remedies that the Pledgee or the Secured Parties may now or at any time in
     the future have from or against the Pledgors or any other person having
     granted security for the Secured Obligations

9.5. Each of the Pledgors herby waives any right it may have to first require
     the enforcement of any other right, security or guarantee before the
     enforcement of this Pledge.

9.6. No failure on the part of the Pledgee to exercise, or delay on its part in
     exercising, any of its rights under this Pledge Agreement shall operate as
     a waiver thereof, nor shall any single or partial exercise of any such
     right preclude any further or other exercise of that or any other rights

9.7. The liability and obligations of the Pledgors hereunder will not be
     affected by an act, omission or circumstance occurring after the signature
     hereof which, but for this provision, would release or prejudice any of its
     obligations hereunder in whole or in part including without limitation:

     9.7.1. any time or waiver granted to, or composition with anyone of the
            Pledgors, or any other person; or

     9.7.2. the taking, variation, compromise, exchange, renewal or release or
            refusal or neglect to perfect, take up or enforce, any rights or
            remedies against, or security over assets of any of the Pledgors; or

     9.7.3. any incapacity or lack of powers, authority or legal personality of
            the any of the Pledgors; or

     9.7.4. any amendment to, or any variation, waiver or release of, any
            Secured Obligation or of the obligations of any obligor under any
            other Loan Document; or

     9.7.5. any failure to take, or fully to take, any security contemplated by
            the Loan Document or otherwise agreed or contemplated to be taken in
            respect of the Secured Obligations; or

     9.7.6. any failure to realise or fully to realise the value of, or any
            release, discharge, exchange or substitution of, any security taken
            in respect of the Secured Obligations; or

     9.7.7. any other act, event or omission which, but for this clause 8.6,
            might operate to discharge, impair or otherwise affect any of the
            obligations of any of the Pledgors contained in this Pledge
            Agreement, the rights, powers and remedies

                                       13

          conferred upon the Secured Parties by this Pledge Agreement, the
          Pledge or by law.

9.8.  For the avoidance of doubt, all rights of the Pledgee hereunder, the
      security interest in the Pledged Collateral and all obligations of the
      Pledgors hereunder shall be absolute and unconditional irrespective of (a)
      any lack of validity or enforceability of the Credit Agreement, any other
      Loan Document, any agreement with respect to any of the Secured
      Obligations or any other agreement or instrument relating to any of the
      foregoing, (b) any change in the time, manner or place of payment of, or
      in any other term of, all or any of the Secured Obligations, or any other
      amendment or waiver of or any consent to any departure from the Credit
      Agreement, any other Loan Document, or any other agreement or instrument,
      (c) any exchange, release or non-perfection of any other lien on other
      collateral, or any release or amendment or waiver of or consent under or
      departure from any guarantee, securing or guaranteeing all or any of the
      Secured Obligations or (d) any other circumstance that might otherwise
      constitute a defence available to, or a discharge of, the Pledgors in
      respect of the Secured Obligations or this Pledge Agreement.

9.9.  This Pledge Agreement and the Pledge created hereby shall remain in full
      force and effect despite any amalgation, merger, split or similar
      operation affecting the Pledgee (and for the avoidance of doubt the
      Pledgors) and any reference to the Pledgee includes a reference to any
      successor or assignee or any person which assumes the rights and
      obligations of the Pledgee hereunder or under the Credit Agreement
      (including for the avoidance of doubt in the case of transfer, novation or
      otherwise).

9.10. For the purpose of article 1278 of the Civil Code and without prejudice to
      this clause the Pledgee expressly reserves the Pledge in the case of
      assignment, novation, amendment or transfer of the Secured Obligations or
      any rights under the Credit Agreement or any other Loan Document. In
      addition and for the avoidance of doubt, each of the Pledgors hereby
      waives any rights arising for it now or in the future (if any) under
      Article 2037 of the Luxembourg Civil Code.

10.   COVENANTS

10.1  Each of the Pledgors covenant to the Pledgee that they shall act in good
      faith to maintain and exercise their rights in the Company, and in
      particular shall not knowingly take any steps nor do anything which could
      be reasonably expected to materially and adversely affect the rights of
      the Pledgee, the rights of remedies of the Collateral Agent under this
      Agreement, the Credit Agreement or any other Loan Document or the ability
      of the Pledgee to exercise the same or the existence of the security
      interest created hereunder or result in the violation of any of the
      provisions of the Credit Agreement.

10.2. Each of the Pledgors shall cooperate with the Secured Party and sign or
      cause to be signed all such further documents and take all such further
      action as the Secured Party

                                       14

      may from time to time reasonably request to perfect and protect this
      Pledge and to carry out the provisions and purposes of this Pledge
      Agreement.

10.3. Each of the Pledgors is, and will be, the sole owner of its Pledged Shares
      free from any encumbrance, except as created in favour of the Secured
      Parties by this Pledge Agreement and save as may be permitted pursuant to
      Section 6.02 (d), (e) or (q) of the Credit Agreement.

11.   FURTHER ASSURANCES

Each of the Pledgors irrevocably appoints the Pledgee to be its attorney and in
its name and on its behalf to execute, deliver and perfect all documents and do
all things that the Secured Party may consider to be requisite for (a) carrying
out any obligation imposed on the Pledgors under this Pledge Agreement which any
of the Pledgors has failed to carry out or (b) perfecting or maintaining the
security interest created hereunder. Each Pledgor shall ratify and confirm all
things done and all documents executed by the Pledgee in the exercise of that
power of attorney.

12.   COUNTERPARTS

This Pledge Agreement may be executed in counterparts (and by different parties
hereto on different counterparts), each of which shall constitute an original,
but all of which when taken together shall constitute a single contract.
Delivery of an executed counterpart of a signature page to this Agreement by
telecopy shall be effective as delivery of a manually executed counterpart of
this Pledge Agreement.

13.   SEVERABILITY

Any provision of this Pledge Agreement that is prohibited or unenforceable in
any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of
such prohibition or unenforceability without invalidating the remaining
provisions hereof, and any such prohibition or unenforceability in any
jurisdiction shall not invalidate or render unenforceable such provision in any
other jurisdiction.

14.   NO WAIVER; CUMULATIVE REMEDIES

For the avoidance of doubt, the Pledgee shall not by any act, delay, omission or
otherwise be deemed to have waived any of its rights or their remedies hereunder
and no waiver shall be valid unless in writing, signed by or on behalf of the
Pledgee, and then only to the extent therein set forth. A waiver by or on behalf
of the Pledgee of any right or remedy hereunder on any one occasion shall not be
construed as a bar to any right or remedy which the Pledgee would otherwise have
on any future occasion. No failure to exercise nor any delay in

                                       15

exercising on the part of the Pledgee, any right, power or privileges hereunder,
shall operate as a waiver thereof; nor shall any single or partial exercise of
any right, power or privilege hereunder preclude any other or further exercise
thereof or the exercise of any other right, power or privilege. The rights and
remedies herein provided are cumulative and may be exercised singly or
concurrently, and are not exclusive of any rights or remedies provided by law.

15.   WAIVERS, AMENDMENTS

Neither this Pledge Agreement nor any terms or conditions hereof may be amended,
changed, waived, discharged, terminated or otherwise modified unless such
amendment, change, waiver, discharge, termination or modification is in writing
and is otherwise in accordance with the terms of this Pledge Agreement. None of
the terms or provisions of this Pledge Agreement may be waived, altered,
modified or amended except by an instrument in writing, duly executed by or on
behalf of the Pledgee and the Pledgors.

16.   ASSIGNMENT

The Pledgors may not assign or transfer all or any part of their rights or
obligations hereunder except with the express written consent of the Pledgee.
The Pledgee may assign all or any of its respective rights hereunder with the
consent of the Pledgors, which consent shall not be unreasonably withheld and
any successor to or assignee of the Pledgee shall be entitled to the full
benefits hereof. In the event of an assignment by the Pledgors with the express
written consent of the Pledgee any assignee or successor of any of the Pledgors
shall assume, jointly with the assigning Pledgor or the Pledgor it succeeds, as
the case may be, all obligation of the Pledgors hereunder including those arisen
and not satisfied prior the date of the assignment or succession thereto.

17.   RIGHTS OF RECOURSE

17.1. Each of the Pledgors hereby formally waives and renounces to exercise any
      Rights of Recourse or any other rights it may have against any obligor or
      Security Grantor pursuant to the Credit Agreement or other Loan Documents
      in any manner (including for the avoidance of doubt, by way of provisional
      measures such as provisional attachment ("saisie-arret conservatoire") or
      by way of set-off.

17.2. Each of the Pledgors acknowledges that this waiver is of essence for the
      Pledgee and the Secured Parties and it is agreed that this clause shall
      survive any termination or discharge of this Pledge Agreement.

                                       16

18.  NOTICES

Every notice, request, demand or other communication under this Agreement shall
be given:

(1)  to the Pledgors (or respectively any thereof) at:

BCP CRYSTAL HOLDINGS Ltd. 2,
For the attention of the Directors
c/o Parent
29 rue Eugene Ruppert
L-2453 Luxembourg

with a copy to Blackstone Capital Partners Cayman IV L.P. 345 Park Avenue,
New York, New York 10154

BCP CRYSTAL CAYMAN Ltd. 1,
For the Pledgor(s):
For the attention of the Directors
c/o Parent
29 rue Eugene Ruppert
L-2453 Luxembourg

with a copy to Blackstone Capital Partners Cayman IV L.P. 345 Park Avenue,
New York, New York 10154

(2)  to the Pledgee at:
Deutsche Bank AG, New York Branch,
60 Wall Street,
New York, New York 10005,
attention: Carin Keegan
(telecopy: (212) 797-5696) (e-mail: carin.keegan@db.com),

with a copy to:White & Case LLP, 1155 Avenue of the Americas, New York, New York
10036, attention: Sean Geary, Esq. (telecopy: (212) 354-8113);

(3)  to the Company at:

BCP CAYLUX HOLDINGS LUXEMBOURG S.C.A.
For the attention of the Manager
8 rue Mathias Hardt
L-1717 Luxembourg

                                       17

with a copy to Blackstone Capital Partners Cayman IV L.P. 345 Park Avenue,
New York, New York 10154 and to 29 rue Eugene Ruppert L-2453 Luxembourg.

or to such other address or facsimile or telex number as is notified by any
party to the other parties to this Pledge Agreement.

Every notice, request, demand or other communication under this Pledge Agreement
shall be deemed to have occurred when received.

19.      EXPENSES AND STAMP DUTY

The Pledgors shall indemnify and keep indemnified the Pledgee against all costs,
charges, fees and expenses (including legal fees, stamp duties and any value
added tax) incurred in connection with the negotiation, preparation, execution,
registration, implementation and preservation and amendments, waivers or
consents of this Pledge Agreement and all costs, charges, fees and expenses
incurred in connection with the enforcement of this Pledge Agreement (in each
case including fees for legal advisers to the Pledgee) shall be reimbursed to
the Secured Party by the Pledgors upon 2 business days notice.

For the avoidance of doubt, all costs and charges incurred as a result of the
creation of the Pledge, the perfection thereof, and any other costs and charges
incurred as a result of this Pledge Agreement or the enforcement thereof shall
be borne by the Pledgors.

20.      GOVERNING LAW; JURISDICTION CLAUSE

20.1.    This Pledge Agreement shall be governed by, and construed in accordance
         with the laws of Luxembourg.

20.2.    The parties hereby irrevocably submit to the exclusive jurisdiction of
         the Luxembourg courts in connection with any disputes arising under
         this Pledge Agreement.

21.      PROCESS AGENT

Without prejudice to any other mode of process, each of the Pledgors hereby
irrevocably:

21.1     appoints the Company, which hereby accepts such appointment, as its
         agent for service of process relating to any proceedings before the
         Luxembourg courts in connection with this Pledge Agreement;

21.2.   agrees that failure by its process agent to notify it of the process
        will not invalidate the proceedings concerned.

                                       18

IN WITNESS WHEREOF, each party has executed and delivered this Agreement in
three originals by its duly authorized officer as of the day and year first
above written.

                                       19

/s/ Martin Brand
----------------------------
FOR AND BEHALF OF
BCP CRYSTAL HOLDINGS LTD. 2
BY: Martin Brand
TITLE: Director

PLEDGOR

                                       20

/s/ Martin Brand
----------------------------
FOR AND BEHALF OF
BCP CRYSTAL (CAYMAN) LTD. 1
BY: Martin Brand
TITLE: Director

PLEDGOR

                                       21

/s/ Albert Fischetti     /s/ Robert Wheeler
-------------------------------------------
FOR AND BEHALF OF THE PLEDGEE
DEUTSCHE BANK AG, NEW YORK BRANCH,
as Pledgee and Collateral Agent for the benefit of the Secured Parties on behalf
of the Secured Parties
(and for the avoidance of doubt their permitted successors and assigns)
BY:    Albert Fischetti       Robert Wheeler
TITLE: Director               Director

                                       22

The Company acknowledges and accepts the existence of this Agreement and the
Pledge created over the Pledged Shares, takes notice of, and agrees to, the
terms thereof, takes notice and agrees to its obligations thereunder and without
limitation undertakes to duly register this Pledge pursuant to its terms in its
register of shareholders and to provide the Pledgee with a copy of the register
evidencing such the registration.

/s/ Martin Brand
----------------------------
FOR AND BEHALF OF THE COMPANY
BCP CAYLUX HOLDINGS LUXEMBOURG S.C.A. acting through
BCP CAYLUX HOLDINGS LTD 1,  the General Partner and Manager of the Company
BY: Martin Brand
TITLE: Director

                                       23

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