EXHIBIT 10.27

Amended and Restated Tax Sharing Agreement

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This
Amended and Restated Tax Sharing Agreement is made and entered into as of February 7, 2001 by and among The Dow Chemical Company, a Delaware corporation ("Dow"), as Common Parent, on
behalf of itself and the other members of the Dow Group (other than any member of the UCC Group), and Union Carbide Corporation, a Delaware corporation ("UCC"), on behalf of itself and the other
members of the UCC Group.

WHEREAS,
Dow is the Common Parent of the Dow Group, and files a Consolidated Return for the Dow Group, which prior to February 7, 2001, did not include the UCC Group;

WHEREAS,
UCC is the Common Parent of an Affiliated Group comprised of UCC and its Subsidiaries, and prior to February 7, 2001, filed a Consolidated Return for the UCC Group;

WHEREAS,
certain state and local consolidated, combined or unitary income or franchise tax returns are filed for various Members or for the Dow Group;

WHEREAS,
the UCC Group became part of the Dow Group on February 7, 2001, as a result of a triangular merger transaction;

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

1.     Definitions

The
following terms as used in this Agreement, shall have the meanings set forth below:

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2.     Scope and Cooperation

(a)Scope. This Agreement relates solely to (i) U.S. federal income tax liabilities and (ii) income tax liabilities with
respect to certain state and local jurisdictions in which any UCC Member participates with Dow or any Subsidiary of Dow (other than UCC or any of its subsidiaries) in the filing of a Combined Return.

(b)Cooperation. Dow and UCC shall cooperate, and each shall cause its respective Subsidiaries to cooperate fully in the implementation of
this Agreement on a consolidated basis, including but not limited to, providing promptly to the requesting party such assistance and documentation (at the expense of the providing party) as may be
requested by such party in connection with the preparation or filing of the Consolidated Return (and any Combined Return), and the conduct of any audit or other examination, or judicial or
administrative proceeding or determination relating thereto.

3.     Filing of Returns

(a)Appointment of Dow as Agent For Consolidated Return. UCC and each of its Subsidiaries hereby appoint Dow as their agent, with respect
to all periods during which UCC or such Subsidiary, as the case may be, is a Member of the Dow Group, for the purpose of filing the Consolidated Return and for making any election or application or
taking any action in connection therewith on behalf of UCC and such Subsidiary. Nothing herein shall be construed as requiring Dow to file a Consolidated Return for any Taxable Year; provided, however,that if Dow decides not to file a Consolidated Return it shall notify UCC in writing within a period reasonably sufficient to
permit UCC to file timely returns for the UCC Members.

(b)Dow Control Over Consolidated Return. Dow shall prepare and file, or cause to be prepared and filed, the Consolidated Return and any
other documents or statements required to be filed with the Service that pertain to the determination of the Dow Group Consolidated Tax Liability for each Taxable Year of the Dow Group. In its sole
and absolute discretion, but after prior good faith consultation with UCC on issues which impact any UCC Member's Tax Liability (if requested by such UCC Member), Dow shall have the right with respect
to any Consolidated Return that it has filed or will file to determine:



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Amended and Restated Tax Sharing Agreement

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UCC
and each Subsidiary of UCC hereby irrevocably appoints Dow as its agents and attorney-in-fact to take any action (including the execution of documents) as Dow may deem
appropriate to effect the foregoing. Nothing contained in this Agreement shall limit Dow's discretion to determine the manner in which any item shall be reported on the Consolidated Return.

(c)Appointment of Dow as Agent for Certain Combined Returns. UCC and each Subsidiary of UCC hereby appoint Dow as their agent with respect
to all periods during which UCC or such Subsidiary, as the case may be, is a Member of the Dow Group, for the purpose of filing any Combined Return that Dow (or any Subsidiary of Dow, other than UCC
or any of its Subsidiaries) may elect to file, and making any election or application or taking any action (including any extension of statues of limitation) in connection therewith on behalf of UCC
and such Subsidiary. UCC and each of its Subsidiaries hereby consent to the filing of such returns, and to the making of such elections and applications. Nothing contained in this Agreement shall be
construed as requiring Dow or any Subsidiary of Dow to file a Combined Return on behalf of UCC or any Subsidiary of UCC for any Taxable Year. Dow shall in its sole and absolute discretion
determine whether and with respect to which jurisdictions UCC or any of its Subsidiaries shall participate in the filing of any Combined Return.

(d)Other Returns. UCC and its Subsidiaries shall be solely responsible for filing all tax returns not described in subsections
(b) and (c) of this Section 3 and that relate solely to UCC and/or its Subsidiaries.

(e)Assistance and Responsibility For Support of Returns; Provisions of Financial Data. UCC and its Subsidiaries shall assist Dow in the
filing, to the extent permitted by law, of a Consolidated Return and such Combined Returns as Dow elects to file or cause to be filed, by maintaining such books and records and providing such
information as may be necessary or useful in the filing of such returns and executing any documents and taking any actions which Dow may reasonably request in connection therewith including without
limitation designing and implementing systems, processes and programs for the compilation and review of financial data; the review of transactions and accounting methods; and the preparation of
returns and of supporting documentation to assure that such returns and all related reports and schedules are complete and accurate. UCC shall, at its own expense, provide Dow with all information
required by Dow to reflect completely and accurately the financial results of the UCC Members in the Dow Group's Consolidated Return (or a Combined Return). Such information shall be in such form as
determined by Dow from time to time and shall be delivered to Dow on a mutually agreed upon date, but in no event later than the first business day in June of the year following such Taxable Year. UCC
shall, at its own expense, maintain sufficient books, records and expertise to support all returns, positions taken thereon and methods used to prepare such returns until there has been a Final
Determination with respect to all issues included on such returns. Dow and UCC shall provide one another with such other information concerning such returns and the application of payments made under
this Agreement as Dow or UCC may reasonably request of one another.

4.     Union Carbide Tax Calculations

For
each Taxable Year for which a Consolidated Return or Combined Return is filed and UCC or any Subsidiary of UCC is a Member of the Dow Group, Dow shall calculate each UCC Member's tax liability for
that portion of the Taxable Year in which the UCC Member is included in the Dow Group. Dow shall determine the impact to the separate UCC Members of the Code provisions that require consolidated
calculations but with any simplifying conventions and assumptions approved or suggested by the Tax Director of Dow. The calculation shall include gains and losses with respect to deferred intercompany
transactions if, and only if, and to the extent that, such gains or losses are actually restored and reflected on the Dow Group's Consolidated Return.

5.     Payments by UCC Members

(a)UCC Member's Federal Tax Liability. For each Taxable Year of the Dow Group, UCC Members shall pay to Dow the amount of the UCC Member's
Federal Tax Liability in the manner provided in Section 9(a) hereof in the amounts and at the time or times herein provided.



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Amended and Restated Tax Sharing Agreement

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(b)UCC Member's State and Local Tax Liability. For each Taxable Year with respect to which UCC or any of its Subsidiaries Participates in
the filing of a Combined Return such UCC Member shall pay to Dow, within 30 days of receipt of a bill from Dow, the UCC Member's State and Local Tax Liability for such Taxable Year.

(c)Other Taxes. UCC shall be solely responsible for paying tax with respect to all tax returns that UCC or any of its Subsidiaries have
responsibility for filing pursuant to this Agreement.

6.     Payments to UCC Members

Any
payment that UCC Members may be entitled to receive with respect to their last Taxable Year pursuant to Section 7(c) hereof shall be paid to such UCC Member in the manner provided in
Section 9(a) hereof on or before December 31 of the calendar year following the end of the applicable Taxable Year.

7.     Use of Attributes; Additional Rights and Obligations Upon Deconsolidation

(a)    In
determining the Dow Group's Consolidated Tax Liability and in preparing the Consolidated Return for each taxable year, Dow may utilize on behalf of the Dow Group all the tax
attributes and other items of income, gain, loss, deduction, expense, credit, etc. of UCC and its Subsidiaries arising in such taxable year or which arose in another taxable year or taxable years and
which properly may be carried back or carried forward to such taxable year, without regard to whether such attributes and items are concurrently being, have previously been or may subsequently be
utilized in determining for any Taxable Year or Taxable Years, any UCC Member's Tax Liability. Except as expressly provided in Section 7(b) and Section 8 of this Agreement, no UCC Member
shall in any manner be entitled to any compensation for the use of any attributes and other items of income, gain, loss, deduction, expense, credit, etc. of any UCC Member. Moreover, in the event any
UCC Member ceases for any reason to be a Member of the Dow Group either (A) after any of its tax attributes or items of income, gain, loss, deduction, expense, credit, etc. has been utilized by
Dow on behalf of the Dow Group in determining the Dow Group's Consolidated Tax Liability for any Taxable Year or Taxable Years of the Dow Group, but before any UCC Member has utilized such attribute
or item (in whole or in part) in reducing its payment obligation under Section 5(a) of this Agreement for any Taxable Year or Taxable Years, or (B) after any of its tax attributes or
items of income, gain, loss, deduction, expense, credit, etc. has been utilized by any UCC Member in reducing its
payment obligation under Section 5(a) of this Agreement for any Taxable Year or Taxable Years, but before the Dow Group has utilized such attribute or item (in whole or in part) in determining
for any Taxable Year or Taxable Years, the Dow Group Consolidated Tax Liability, neither the Dow Group nor the UCC Member, as the case may be, shall be obligated or required to compensate such other
party in any manner for any amount as a result to the occurrence of such event, except as expressly provided in Sections 7 and 8 below.

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(b)    Dow
shall determine tax attributes, including but not limited to, foreign tax credits, net operating losses and general business credits (collectively "Tax Attributes"), for each UCC
Member on a separate Member basis. For example, the net operating loss of a UCC Member shall equal the separate net operating loss of such member and not its share of any consolidated net operating
loss of the Dow Group. The foreign tax credits of a UCC Member shall equal the foreign taxes paid or deemed paid by such UCC Member. The research and experimentation credits of a UCC Member shall
equal such Member's share of the consolidated research and experimentation credit as determined pursuant to Income Tax Regulation Sections 1.41-6. Dow will use reasonable simplifying
assumptions and conventions, including assumptions relating to the order Tax Attributes are utilized, and the manner in which expiration of Tax Attributes are shared among Dow Group Members, including
UCC Members.

(c)    Dow
shall annually determine the amount of Tax Attributes allowed to be used to reduce any UCC Member's payment obligation to Dow hereunder. Dow shall determine the cumulative Tax
Attributes of each UCC Member during taxable periods when it is a member of the Dow Group or carried to such a period from a separate return period by category for each UCC Member which shall be
reduced by sum of the following:



The
amount of Tax Attributes by category remaining after the above described calculation is hereinafter referred to as "Allowable Tax Attributes". A UCC Member may reduce its payment obligation to Dow
under Section 5(a) of this Agreement by the value (as defined below) of its own Allowable Tax Attributes and the Allowable Tax Attributes of any other UCC Member. If a UCC Member uses the
Allowable Tax Attributes of another UCC Member to reduce its obligation to Dow, then such UCC Member shall pay the other UCC Member the value (as defined below) of the Allowable Tax Attributes so used
by October 31 of the year following the applicable Taxable Year. Dow shall determine which other UCC Member's Allowable Tax Attributes are used. Allowable Tax Attributes may not be used more
than once to reduce a payment obligation to Dow. A UCC Member may not carry back Allowable Tax Attributes to reduce its payment obligations to Dow for previous Taxable Years.

(d)    In
the event UCC or any of its Subsidiaries ceases for any reason to be a Member of the Dow group, then within 60 days after the filing of the Consolidated Return for the last
Taxable Year that UCC or such Subsidiary was included therein, Dow shall inform UCC or such subsidiary, as the case may be, of the amount of Allowable Tax Attributes as of the end of the UCC Member's
last Taxable Year. Dow shall pay the UCC Member the value (as defined below) of such Allowable Tax Attributes that are not used by any UCC Member to reduce its payment obligation to Dow pursuant to
this Agreement. Dow's determinations pursuant to this Section 7(d) shall be presumptively correct and shall be binding on the parties hereto.

(e)    For
purposes of this Section 7, tax credits shall be valued on a dollar-for-dollar basis and losses or deductions shall be valued at the highest
marginal federal tax rate applicable to corporations (i) for purposes of Section 7(c) hereof, for the Taxable Year for which the Allowable Tax Attributes are used to reduce a UCC
Member's oligation to Dow, and (ii) for purposes of Section 7(d) hereof, for the UCC Member's last Taxable Year.

(f)    If
a UCC Member at any time acquires the assets and properties of another UCC Member pursuant to a transaction to which Section 381 of the Code applies or otherwise, the
acquiring UCC Member shall, from and after the date of such acquisition, be responsible for all of the undertakings and obligations of such other UCC Member hereunder and shall, from after such date,
be entitled to receive any and all payments that such other UCC Member would be entitled to receive hereunder. Provided such other UCC Member ceases to exist solely as a result of such transaction,
such event shall not, except as expressly provided herein, in any way result in any acceleration of the time at which any payments hereunder are due to or from such other UCC Member, and except as
expressly provided herein to the contrary, all such payments shall be

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Amended and Restated Tax Sharing Agreement

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made
to or by the acquiring UCC Member at the same time or times that such payments would be payable to or by such other UCC Member had such other UCC Member continued to exist as a UCC Member
hereunder.

8.     Adjustments

(a)    If
any adjustment is made with respect to a Taxable Year during which UCC or any of its Subsidiaries is a member of the Dow Group to any item of income, gain, loss, deduction, expense
or credit of UCC or any Subsidiary of UCC by reason of the filing of an amended Consolidated Return (or an amended Combined Return), a claim for refund with respect to such Taxable Year or an audit
with respect to such Taxable Year by the Service (or the applicable State and Local taxing authority), the amounts, if any, due to or from UCC or a UCC Subsidiary under this Agreement shall be
redetermined by taking into account any such adjustment and applying the procedures set forth in this Agreement. Dow shall have sole and absolute discretion, but after prior good faith consultation
with the Tax Director of UCC, to determine whether and in what amount an adjustment applies to UCC or any of its Subsidiaries. If, as a result of such redetermination, any amounts due to or from UCC
under this Agreement differ from the amounts previously paid, then except as herein provided, payments of such difference together with any interest, penalty or addition to tax properly allocated to
UCC shall be made as an adjustment to the UCC Member's Tax Liability for the current Taxable Year. If such UCC Member is no longer a Member of the Dow Group, then instead of making an adjustment to
the UCC Member's Tax Liability, the same amount shall be paid to UCC or by UCC in the manner provided in Section 9(a) as follows: (a) in the case of an adjustment resulting in a credit
or refund of tax, within 10 calendar days of the date on which such refund or notice of such credit is received by Dow or the UCC Member with respect to such adjustment, or (b) in the case of
an adjustment resulting in a payment of additional tax, within 10 calendar days of the date on which such additional tax is paid. Any interest, penalty or addition to tax will be allocated as Dow, in
its discretion, deems just and proper in view of all applicable circumstances (to the extent practicable, however, such allocations shall reflect the amount of interest that the UCC Member would have
paid on a stand alone basis). Nothing in this Section 8 shall be construed to entitle UCC or any Subsidiary of UCC to receive a double benefit or compensation with respect to any attribute.

9.     Remittance by and to UCC

(a)    Until
such time as Dow notifies UCC in writing to the contrary, any and all payments that UCC and its Subsidiaries are required to make to Dow hereunder shall be made and remitted by
UCC and its Subsidiaries directly to Dow. Dow shall be responsible for making all payments required to be made by Dow hereunder to UCC and its Subsidiaries.

(b)    Any
payments required to be made hereunder that are not made on or before such date on which such payment is due under the terms of this Agreement shall bear interest at the rate
specified from time to time pursuant to section 6621(a)(2) of the Code, and the party to whom such payment is due shall be entitled to receive interest computed at such rate upon the late
payment of any such amount which is required at any time to be paid hereunder.

10.   Carrybacks

If
part or all of an unused consolidated net operating loss or tax credit of UCC or one of its Subsidiaries arises in a year in which UCC or such Subsidiary is not a Member of the Dow Group and is
carried back to a year in which UCC or such Subsidiary is a Member of the Dow Group, any refund or reduction in tax liability arising from the carryback will be retained by or allocated to Dow. Dow
shall have no obligation to pay to UCC or its Subsidiaries the amount of any refund or credit of federal income tax that Dow may receive as a result of such carryback (nor will such occurrence affect
the calculation of Allowable Tax Attributes).

11.   Allocation of Dow Group Consolidated Tax Liability For Purposes of Determining Earnings and Profits

The
Dow Group Consolidated Tax Liability for each Taxable Year of the Dow Group shall, for purposes of determining the earnings and profits of each Member, be allocated among the Members in accordance
with the methods prescribed in Section 1.1552-1(a)(2) of the Income Tax Regulations. Notwithstanding the foregoing, Dow may, in its sole and absolute discretion, change the method
set forth above to the extent that is it permitted to do so by applicable law; provided further that such change in method is consistently applied to all Members of the Dow Group.

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12.   Dow Control of Conduct of Audits, Litigation, Expenses

(a)    In
any audit, conference or other proceeding with the Service or the relevant state or local authorities, or in any judicial proceedings concerning the determination of the Dow Group
Consolidated Return Liability or the state or local income tax liability of any consolidated, combined or unitary group including Dow or any of it Subsidiaries (other than UCC or a Subsidiary of UCC)
and UCC (or any of the Subsidiaries of UCC), Dow shall have the exclusive right to contest (with the participation of the Tax Director of UCC) in (a) any examination by the Service at the
district level or by any state or local authority, or (b) the preparation and submission of any protest brief or other submission to the Service's appellate division (or in any similar
administrative proceeding before any state or local authority), compromise or settle any adjustment or deficiency proposed, asserted or assessed as a result of such proceeding and to extend or refuse
to extend the applicable time period for making assessments or adjustments. UCC and each subsidiary of UCC hereby appoints Dow as its agent for the purpose of conducting such contest or proposing and
concluding any such compromise and settlement. Dow shall have control over the proceedings, but shall confer in good faith with UCC regarding any proposed adjustment bearing on any material liability
of UCC pursuant to this Agreement. UCC shall support any audit or other examination or judicial or administrative proceeding with respect to any Taxable Year, at its own expense, in any reasonable way
requested by Dow. Nothing herein shall limit Dow's discretion to determine whether and in what amount an item arising from UCC or any UCC Subsidiary shall be conceded or otherwise compromised and
whether and in what amount an item results in an adjustment to UCC or any UCC Subsidiary described in Section 8(a); provided, however, that such decision shall be made only after full and
complete good faith consultation with the Tax Director of UCC.

(b)Expenses. UCC shall reimburse Dow for all expenses (including, without limitation, legal and accounting fees) incurred by Dow in the
course of proceedings described in this Section 12 to the extent such expenses are allocable, in Dow's sole and absolute discretion, but after prior good faith consultation with UCC (if
requested by the Tax Director of UCC), to UCC Member items.

13.   Partnership Interests

In
connection with any partnership interest for which UCC or a UCC Subsidiary is the Tax Matters Partner, UCC shall to the maximum extent feasible make elections, use accounting methods, and report
positions with respect to such partnership interest that are consistent with positions reported on the Dow Group's Consolidated Return and report positions on any other tax returns that consistent
with those reported for such partnership interest on the Dow Group's Consolidated Return. UCC shall confer in good faith with Dow in advance regarding any such item which may be or could be
inconsistent with items on the Dow Group's Consolidated Return.

14.   Administration; Resolution of Disputes

The
provisions of this Agreement will be administered by Dow. Except as otherwise expressly governed by the terms of this Agreement, Dow may use any reasonable method in making any computations or
allocations hereunder, and Dow's calculations will be conclusive.

15.   Indemnification Against Joint and Several Liability

Except
as may be expressly provided otherwise in this Agreement, Dow shall be liable for, and agrees to defend, hold harmless and indemnify the UCC Members from and against, any and all taxes (and any
interest, penalties and similar amounts relating thereto of the Dow Group (other than the UCC Members), including, but not limited to, any such taxes (and any interest, penalties and similar amounts
relating thereto) for which any UCC Member is or may be or become liable for under any successor or transferee liability law or other similar law under Section 1.1502-6 or
1.1502-78(b) of the Income Tax Regulations or any similar provision under any applicable foreign, state, or local law.

16.   Interpretation

This
Agreement is intended to provide for the calculation and allocation of certain federal and state and local income tax liabilities between the Dow Group (other than UCC and its Subsidiaries) and
the UCC Member, and any situation or circumstances concerning such calculation and allocation that is not specifically contemplated hereby or provided for herein shall be dealt with in a manner
consistent with the underlying principles of calculation and allocation in this Agreement.

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17.   Effect of Agreement

This
Agreement shall determine the liability of Dow and the UCC Members as to the matters provided for herein, whether or not such determination is effective for purposes of the Code or of state or
local revenue laws, for financial reporting purposes or any other purpose.

18.   Term

This
Agreement will apply to Taxable Years ending after the Effective Date and all subsequent Taxable Years, unless Dow and any UCC Member agree in writing to terminate this Agreement. Notwithstanding
such termination, this Agreement will continue in effect with respect to any payment or refunds due for all Taxable Years prior to termination. Any UCC Member that leaves the Dow Group will be bound
this Agreement. The failure of one or more parties hereto to qualify for inclusion in the Consolidated Return filed by Dow will not operate to terminate this Agreement with respect to the other
parties as long as two or more parties hereto continue to so qualify.

19.   Assignment

Rights
and obligations under this Agreement will not be assignable by any party without the prior written consent of the other parties.

20.   Confidentiality

Dow
and the UCC Members agree that any information furnished among one another pursuant to this Agreement is confidential and, except as and to the extent required during the course of the preparation
or returns or the conduct of an audit or litigation, shall not be disclosed to other persons.

21.   Documentation

All
material, including but not limited to, returns, supporting schedules, work papers, correspondence, and other documents relating to the Consolidated Return and any Combined Returns filed for a
Taxable Year subject to this Agreement will be made available to any party to the Agreement during regular business hours for a minimum period equal to applicable federal and state record retention
requirements (or the applicable statue or limitations period).

22.   Additional Members

The
parties hereto specifically recognize that from time to time other Subsidiaries of Dow and UCC may become or become or become again Members of the Dow Group and hereby agree that this Agreement
shall be deemed to have been adopted and affirmed, or readopted and reaffirmed, by such Subsidiary. Dow and UCC shall, upon the written request of the other, cause any of their respective Subsidiaries
formally to ratify and execute this Agreement.

23.   Tax Law Changes

Any
alteration, modification, addition, deletion, or other change in the Code or the Income Tax Regulations (or the applicable state and local tax provisions) will automatically be applicable to this
Agreement when changed.

24.   Successors and Assigns

This
Agreement will bind and inure to the benefit of the respective successors and assigns of the parties hereto; but no assignment will relieve any party of its obligations hereunder without the
written consent of the other parties.

25.   Counterparts

This
Agreement may be executed in two or more counterparts, each of which shall be deemed to be an original, but all of which together shall constitute one and the same instrument.

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26.   Headings

The
headings in this Agreement are inserted for convenience only and shall not constitute a part hereof or affect the interpretation of this Agreement.

27.   Severability.

If
any provision of this Agreement is held to be unenforceable for any reason, it shall be adjusted rather than voided, if possible, in order to achieve the intent of the parties to the maximum extent
practicable. In any event, all other provisions of this Agreement shall be deemed valid, binding and enforceable to their full extent.

28.   Entire Agreement

This
Agreement constitutes the entire agreement of the parties with respect to the subject matter hereof and, except as expressly contained herein there are no written or oral promises, covenants,
undertakings, representations or warranties of the parties with respect to the subject matter hereof.

29.   Notices

Any
notices or other communications required or permitted by this Agreement shall be effective upon the receipt, shall be in writing personally delivered or mailed by registered or certified mail,
return receipt requested, or sent by facsimile to the persons and addresses shown below:



30.   Governing Law

This
Agreement shall be construed and interpreted, and all rights and liabilities of the parties hereto, with respect to this Agreement shall be governed by the laws of the State of Delaware, U.S.A.

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IN
WITNESS WHEREOF, the parties respective authorized representatives executed this Agreement on the dates below their respective signatures, but effective as of February 7, 2001.

|THE DOW CHEMICAL COMPANY                              
|------------------------------------------------------
|                                                      
|                                                      
|                                                      
|                                                      
|UNION CARBIDE CORPORATION ON BEHALF OF THE UCC MEMBERS
|                                                      
|                                                      
|                                                      
|                                                      

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