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EXHIBIT 10.28.2    
    

First Amendment to Revolving Credit Agreement  

        This First Amendment to the Revolving Credit Agreement (the "Amendment") is effective as of March 25, 2003,
is entered into by and between UNION CARBIDE CORPORATION, a New York corporation ("Borrower"), and THE DOW CHEMICAL COMPANY, a Delaware corporation ("Lender"), and is made with reference to that
certain Revolving Credit Agreement dated March 25, 2003 (the "Credit Agreement") between Borrower and Lender. Capitalized terms used herein without definition will have the same meanings herein
as set forth in the Credit Agreement. 

        WHEREAS Lender and Borrower desire to amend Subsection 3.2(e) of the Credit Agreement as set forth below; 

        NOW, THEREFORE, in consideration of the premises, agreements, provisions, and covenants contained herein and the Credit Agreement, the
parties hereto agree as follows: 

	1.
	Amendment to Subsection 3.2(e). Subsection 3.2(e) of the Credit Agreement is hereby amended by replacing the subsection in its entirety
with the following language: 

"With
respect to each Loan and Credit Enhancement to be provided on or after July 30, 2003, the Borrower shall have obtained all of the consents specified in  Schedule 2." 

	2.
	No Other Amendment or Waiver. Notwithstanding the agreement of Lender to the terms and provisions of this Amendment, Borrower
acknowledges and expressly agrees that this Amendment is limited to the extent expressly set forth in this Amendment and will not constitute a modification of the Credit Agreement or any other Loan
Document or a course of dealing at variance with the terms of the Credit Agreement or any other Loan Document (other than as expressly set forth above) so as to require further notice by Lender of its
intent to require strict adherence to the terms of the Credit Agreement and the other Loan Documents in the future. All of the terms, conditions, provisions, and covenants of the Credit Agreement and
the other Loan Documents will remain unaltered and in full force and effect except as expressly modified by this Amendment. The Credit Agreement and each other Loan Document will be deemed modified by
this Amendment solely to the extent necessary to effect the waivers and amendments contemplated by this Amendment.

	3.
	Execution in Counterparts. This Amendment may be executed in any number of counterparts and by different parties in separate
counterparts, each of which when so executed will be deemed to be an original and all of which taken together will constitute one and the same agreement. Signature pages may be detached from multiple
separate counterparts and attached to a single counterpart so that all signature pages are attached to the same document.

	4.
	Governing Law. This Amendment and the rights and obligations of the parties to this Amendment will be governed by, and construed and
interpreted in accordance with, the law of the State of New York. 

        The
parties agree that this Amendment is effective as of March 25, 2003, and they have caused their authorized representatives to execute this Amendment as dated below. 

	 BORROWER:	 	LENDER:
	

UNION CARBIDE CORPORATION	
 	

THE DOW CHEMICAL COMPANY
	

By:	
 	

/s/ EDWARD W. RICH
	
 	

By:	
 	

/s/ J. P. REINHARD

	Name:	 	Edward W. Rich	 	Name:	 	J.P. Reinhard
	Title:	 	Chief Financial Officer, Vice President, and Treasurer	 	Title:	 	Executive Vice President and Chief Financial Officer
	Date:	 	JUNE 16, 2003
	 	Date:	 	JUNE 16, 2003

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EXHIBIT 10.28.3    
    

 
 

Second Amendment to Revolving Credit Agreement    
    

        This Second Amendment to the Revolving Credit Agreement (the "Credit
Agreement"), dated as of March 25, 2003 between Union Carbide Corporation, as Borrower
("Borrower") and The Dow Chemical Company, as Lender
("Lender") is effective as of January 1, 2004 (this "Amendment"). Capitalized terms used but not
otherwise defined herein shall have the meanings given such terms in the Credit Agreement. 

W I T N E S S E T H:  

        WHEREAS, Borrower and Lender have entered into the Credit Agreement; 

        WHEREAS,
the parties wish to extend the term of the Credit Agreement; 

        WHEREAS,
Borrower's wholly-owned subsidiary, Union Carbide Subsidiary C, Inc. ("UCSC") is a member of Univation Technologies, LLC
("Univation"), a limited liability company formed pursuant to a Limited Liability Company Agreement dated April 10, 1997 between Exxon Chemical
Licensing Company ("Exxon Chemical") and UCSC; 

        WHEREAS,
Borrower is a party to a number of agreements relating to the Univation entity and has a number of obligations running to Univation, Exxon Chemical and certain other affiliates
of Exxon Chemical (Exxon Chemical and such affiliates, the "Exxon Parties") under such agreements, including obligations to provide funding to UCSC and
to provide certain services to Univation and certain of the Exxon Parties; 

        WHEREAS,
Lender entered into the Univation Reorganization Agreement, dated December 4, 2000, among Exxon Chemical, ExxonMobil Chemical Company
("ExxonMobil"), Lender, Borrower, UCSC, and Univation (the "Reorganization Agreement"), pursuant to
which, among other things, the Lender agreed to be responsible for Borrower's obligations under the Formation Agreements (as such term is defined in the Reorganization Agreement) and under agreements
and documents entered by Borrower after the date of the Reorganization Agreement in connection with Univation (the Formation Agreements and such other agreements, collectively, the
"Univation Agreements"); 

        WHEREAS,
the parties acknowledge that Borrower may use the proceeds of the Credit Agreement for its normal operations, including events such as meeting its obligations under the
Univation Agreements and that, in addition, Univation or the Exxon Parties may come directly to Lender for performance of such obligations in accordance with the Reorganization Agreement; 

        WHEREAS,
the parties wish to formalize their intention, existing at the time of the Reorganization Agreement, that, should Lender provide funds, services or other items of value to UCSC,
Univation or the Exxon Parties pursuant to Lender's undertakings in the Reorganization Agreement, Borrower will reimburse Lender, and to this end the parties executed the Univation Reimbursement
Agreement, effective as of January 1, 2004, which provided for such reimbursement (the "Univation Reimbursement Obligation"); and 

        WHEREAS,
the parties wish for the Univation Reimbursement Obligation to be secured under the Pledge and Security Agreement between the Borrower and the Lender, dated as of
March 25, 2003 (the "Security Agreement"). 

        NOW
THEREFORE, in consideration of the premises and the mutual agreements and covenants hereinafter set forth, Borrower and Lender hereby agree as follows: 

	1)
	The
Credit Agreement is amended as follows: 

        (i)    The
definition of "Change of Control", "Loan Availability", "Reimbursement Obligations" and "Scheduled Termination Date" are amended to read in their entirety as
follows: 

"Change of Control" means (x) any direct or indirect transfer or change of ownership interest in Borrower that results in Lender owning, directly
or indirectly, less than eighty percent (80%) of the voting rights and economic interest of Borrower, or (y) control of Borrower is removed from Lender's board of directors or an entity other
than Lender or a Lender Affiliate replaces a majority of the directors that constitute Borrower's board of directors. 

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"Loan Availability" means, as of any time, the Commitment in effect at such time less the sum of
(a) the aggregate principal amount of Loans outstanding at such time, (b) the aggregate amount of Credit Enhancement Obligations (other than Credit Enhancement Obligations that have
become Loans pursuant to Section 2.4(f)) outstanding as of such time, and (c) the unused Univation Commitment. 

"Reimbursement Obligations" means, at any time with respect to any Credit Enhancement or the Univation Reimbursement Obligation, all matured
reimbursement or repayment obligations of Borrower to Lender then owing under the Reimbursement Agreement or the Univation Reimbursement Agreement relating to such Credit Enhancement or the Univation
Undertaking, as applicable, as a result of Lender having advanced funds (or in the case of the Univation Undertaking, advanced funds or provided services or other items of value) to the beneficiary of
such Credit Enhancement or the Univation Undertaking. 

"Scheduled Termination Date" means March 25, 2005. 

        (ii)   New
definitions of "Reorganization Agreement", "UCSC Loan Agreement", "Univation Commitment", "Univation Reimbursement Agreement" "Univation Reimbursement Obligation"
and "Univation Undertaking" are added to Section 1.1, reading in their entirety as follows: 

"Reorganization Agreement" means the Univation Reorganization Agreement dated as of December 4, 2000, among Exxon Chemical Licensing Company,
ExxonMobil Chemical Company, Lender, Borrower, Union Carbide Subsidiary C, Inc. and Univation Technologies, LLC. 

"UCSC Loan Agreement" means, the Loan Agreement, effective as of January 1, 2004, between the Lender and Union Carbide Subsidiary C, Inc, a
Delaware corporation and wholly-owned subsidiary of the Borrower. 

"Univation Commitment" has the meaning specified in the UCSC Loan Agreement. 

"Univation Reimbursement Agreement" has the meaning specified in Section 2.4(e)(ii). 

"Univation Reimbursement Obligation" has the meaning specified in Section 2.4(e)(ii). 

"Univation Undertaking" means, the undertakings and agreements made by Lender in Article 2 of the Reorganization Agreement. 

        (iii)  The
definition of "Voting Stock" is hereby deleted in its entirety. 

        (iv)  A
new sentence is to be added to the end of Section 2.1, reading in its entirety as follows: 

        "Notwithstanding
the foregoing, if at any time the Lender is required to make a payment with respect to the Univation Undertaking, the Commitment will be increased by the amount of that
payment even if the Commitment has been otherwise terminated under Section 2.3 hereof. If the Commitment has been increased pursuant to the foregoing and any repayment is made by the Borrower
with respect to the Univation Undertaking, the Commitment will be reduced by the repayment amount but, subject to the Lender's rights under Section 2.3, will not be reduced below the original
Commitment (it being understood that the Commitment may be increased again in respect of subsequent payments required to be made with respect to the Univation Undertaking)." 

        (v)   Section 2.4(e)
is hereby amended to be called 2.4(e)(i). 

        (vi)  A
new Section 2.4(e)(ii) is added, reading in its entirety as follows: 

        (e)(ii) In
addition to the Reimbursement Agreements contemplated by Section 2.4(e)(i), Borrower and Lender are entering into a Reimbursement Agreement (the
"Univation Reimbursement Agreement") pursuant to which Borrower has a reimbursement obligation (the "Univation Reimbursement
Obligation") for any funds, services or other goods provided to Exxon Chemical Licensing Company, ExxonMobil Chemical Company, Union Carbide Subsidiary C, Inc. or
Univation Technologies, LLC pursuant to the Univation Undertaking. 

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Notwithstanding
that the parties are entering into the Univation Reimbursement Agreement, the Univation Undertaking shall not be treated as a Credit Enhancement under this Agreement, including,
without limitation, for the purposes of Section 2.10 (Fees). 

        (vii) Section 2.4(f)
is hereby amended by adding the words "or the Univation Undertaking" after the words "Credit Enhancement" in each place they appear. 

        (viii) Section 2.4(g)
is hereby amended by adding the words "or the Univation Undertaking" after the words "Credit Enhancement" in each place they appear. 

        (ix)  Section 2.11(c)
is hereby amended by adding the words "and the unused Univation Commitment" after the words "Credit Enhancement Contingent Liabilities" in each
place they appear. 

        (x)   Section 2.11(d)(iv) is
hereby amended by adding the words "and the unused Univation Commitment" after the words "Credit Enhancement Contingent
Liabilities". 

        (xi)  Section 9.3
is hereby amended and reads in its entirety: 

        Upon
the Termination Date, the Borrower shall pay to Lender in immediately available funds at Lender's office referred to in  Section 10.6, for deposit in a cash collateral account (the "Cash Collateral Account") to be
maintained in the name of Lender at such place as shall be designated by Lender, an amount equal to (a) 110% of the sum of all outstanding Credit Enhancement Contingent Liabilities which are
denominated in U.S. dollars and the current unused Univation Commitment (b) 125% of the sum of all outstanding Credit Enhancement Contingent Liabilities (if any) which are denominated in
currencies other than U.S. dollars. Any amount in the Cash Collateral Account shall bear interest for the benefit of the Borrower at a rate per annum of LIBOR plus 0.125%. Lender may, from time to
time after funds are deposited in the Cash Collateral Account, apply funds then held in the Cash Collateral Account to the payment of any amounts, in accordance with  Section 2.11(d)(iii) and (iv), as shall have become or shall become due and payable by Borrower to Lender in respect of such Credit
Enhancement Contingent Liabilities or the Univation Commitment. Lender shall promptly give written notice of any such application; provided, however,
that the failure to give such written notice shall not invalidate any such application. At the end of each calendar quarter following the establishment of the Cash Collateral Account, Lender shall
determine the aggregate amount of all Credit Enhancement Contingent Liabilities and the unused Univation Commitment outstanding at the end of such calendar quarter (the
"Remaining Contingent Liabilities") and, if the cash then on deposit in the Cash Collateral Account exceeds an amount equal to the sum of
(a) 110% of the sum of all Remaining Contingent Liabilities which are denominated in U.S. dollars and (b) 125% of the sum of all Remaining Contingent Liabilities (if any) which are
denominated in currencies other than U.S. dollars, Lender shall release such excess to Borrower within 30 days of the end of such calendar quarter. Except as provided in the foregoing sentence,
neither Borrower nor any Person claiming on behalf of or through Borrower shall have any right to withdraw any of the funds held in the Cash Collateral Account at any time prior to the termination of
all outstanding Credit Enhancements, the drawing of the entire Univation Commitment and the payment in full of all then outstanding and payable monetary Obligations, but thereafter any amounts
remaining in the Cash Collateral Account shall be for the sole account of Borrower. Any determination of Remaining Contingent Liabilities hereunder shall be conclusive and binding for all purposes,
absent manifest error. 

        (xii) Section 10.5
is hereby amended and reads in its entirety: 

        Lender
is hereby authorized at any time and from time to time, to the fullest extent permitted by law, to set off and apply any and all funds at any time held and other indebtedness or
other amounts at any time owing by Lender or such Affiliates to or for the credit or the account of Borrower (or any Subsidiary Guarantor) against any and all of the Obligations now or hereafter
existing whether or not Lender shall have made any demand under this Agreement or any other Loan Document and although such Obligations may be unmatured. Lender agrees promptly to notify Borrower
(and, if applicable, such Subsidiary Guarantor) after any such set-off and application is made by Lender; provided, however, that the
failure to give such notice shall not affect the validity of such set-off and application. The rights of Lender under this  Section 10.5 are in addition to the other rights and remedies (including
other rights of set-off under Section 2.10
(a) of the Amended and Restated Revolving Loan Agreement between Borrower and Lender effective as of January 1, 2004, and any other rights of set-off) which Lender may have.
In the event any amount is set-off against any unmatured Credit 

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Enhancement
Obligation or the unused Univation Commitment, the amount set-off against such unmatured Credit Enhancement Obligation or the unused Univation Commitment shall be used to cash
collateralize such Credit Enhancement Obligation or the unused Univation Commitment in accordance with Section 9.3. 

2)        Security.    For the avoidance of doubt, the parties agree that, without duplication, the Univation Reimbursement Obligation
is one of the Obligations as defined under the Security Agreement. 

3)        Authorization.    Each Party hereto represents to the others that (a) such Party has all necessary power and authority
to enter into this Amendment; (b) the execution and delivery by such Party of this Amendment has been duly authorized by all requisite corporate or other action on the part of such Party; and
(c) this Amendment has been duly executed and delivered by such Party. 

4)        Credit Agreement Remains in Effect.    Except as expressly amended by this Amendment, the Credit Agreement remains in full
force and effect and nothing in this Amendment shall otherwise affect any other provision of the Credit Agreement or the rights and obligations of the Parties thereto. 

5)        Counterparts.    This Amendment may be executed in one or more counterparts, each of which when executed shall be deemed to be
an original but all of which taken together shall constitute one and the same instrument. 

6)        Governing Law.    This Amendment shall be governed by, and construed in accordance with, the laws of the State of New York,
without regard to its provisions concerning conflicts of laws. 

        IN
WITNESS WHEREOF, the parties hereto have executed and delivered this Amendment as of the date first above written. 

	 	 	UNION CARBIDE CORPORATION
	

 	
 	

By:	

/s/ EDWARD W. RICH

	 	 	Name:	Edward W. Rich
	 	 	Title:	Chief Financial Officer, Vice President and Treasurer
	

 	
 	

THE DOW CHEMICAL COMPANY
	

 	
 	

By:	

/s/ J. P. REINHARD

	 	 	Name:	J. P. Reinhard
	 	 	Title:	Executive Vice President and Chief Financial Officer

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EXHIBIT 10.28.3

Second Amendment to Revolving Credit Agreement

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