Document:

Exhibit 10.1(b)

               LETTER AMENDMENT TO FIVE YEAR TERM LOAN AGREEMENT

                                                Dated as of March 1, 2005

To the banks, financial institutions
     and other institutional lenders
     (collectively, the "Lenders") parties
     to the Credit Agreement referred to
     below and to Citicorp North America, Inc., as agent
     (the "Agent") for the Lenders

Ladies and Gentlemen:

               We refer to the Five Year Term Loan Agreement dated as of
February 15, 2005 (the "Credit Agreement") among the undersigned and you.
Capitalized terms not otherwise defined in this Letter Amendment have the same
meanings as specified in the Credit Agreement.

               It is hereby agreed by you and us as follows:

               Section 2.01 of the Credit Agreement is, effective as of the date
of this Letter Amendment, hereby amended in full to read as follows:

               SECTION 2.01. The Advances. Each Lender severally agrees, on the
terms and conditions hereinafter set forth, to make Advances to any Borrower
from time to time on any Business Day during the period from the Effective Date
until April 5, 2005 in an aggregate amount (based in respect of any Advances to
be denominated in Euros by reference to the Equivalent thereof in Dollars
determined on the date of delivery of the applicable Notice of Borrowing)
outstanding at any time for all Borrowers not to exceed such Lender's
Commitment. Each Borrowing shall be in an amount not less than the Borrowing
Minimum or the Borrowing Multiple in excess thereof and shall consist of
Advances of the same Type and in the same currency made on the same day by the
Lenders ratably according to their respective Commitments. Until April 5, 2005
and within the limits of each Lender's Commitment, the Borrowers may borrow
under this Section 2.01, prepay pursuant to Section 2.09(a) and reborrow under
this Section 2.01.

               This Letter Amendment shall become effective as of the date first
above written when, and only when, the Agent shall have received counterparts of
this Letter Amendment executed by the undersigned and all of the Lenders or, as
to any of the Lenders, advice satisfactory to the Agent that such Lender has
executed this Letter Amendment.

               On and after the effectiveness of this Letter Amendment, each
reference in the Credit Agreement to "this Agreement", "hereunder", "hereof" or
words of like import referring to the Credit Agreement, and each reference in
the Notes and each of the other Loan Documents, if any, to "the Credit
Agreement", "thereunder", "thereof" or words of like import referring to the
Credit Agreement, shall mean and be a reference to the Credit Agreement, as
amended by this Letter Amendment.

<PAGE>

               The Credit Agreement, the Notes and each of the other Loan
Documents, as specifically amended by this Letter Amendment, are and shall
continue to be in full force and effect and are hereby in all respects ratified
and confirmed. The execution, delivery and effectiveness of this Letter
Amendment shall not, except as expressly provided herein, operate as a waiver of
any right, power or remedy of any Lender or the Agent under the Credit
Agreement, nor constitute a waiver of any provision of the Credit Agreement.

               If you agree to the terms and provisions hereof, please evidence
such agreement by executing and returning at least three counterparts of this
Letter Amendment to Susan L. Hobart, Shearman & Sterling LLP, 599 Lexington
Avenue, New York, New York 10022.

               This Letter Amendment may be executed in any number of
counterparts and by different parties hereto in separate counterparts, each of
which when so executed shall be deemed to be an original and all of which taken
together shall constitute one and the same agreement. Delivery of an executed
counterpart of a signature page to this Letter Amendment by telecopier shall be
effective as delivery of a manually executed counterpart of this Letter
Amendment.

               This Letter Amendment shall be governed by, and construed in
accordance with, the laws of the State of New York.

                                        Very truly yours,

                                        CYTEC INDUSTRIES INC.

                                        By: /S/ T. Wozniak
                                            ------------------------------------
                                            Title: Treasurer

Agreed as of the date first above written:

CITICORP NORTH AMERICA, INC.,
        as Agent and as Lender

By: /S/ Carolynee Sheridan
    -----------------------------------------
    Title: Managing Director & Vice President

WACHOVIA BANK, NATIONAL ASSOCIATION

By: /S/ Barbara Van M
    -----------------------------------------
    Title: Director

<PAGE>

ABN AMRO BANK N.V.

By: /S/ Robert H. Steelman
    -----------------------------------------
    Title: Director

By:
    -----------------------------------------
    Title:

CALYON NEW YORK BRANCH

By: /S/ Scott R. Chappelka
    -----------------------------------------
    Title: Director

By: /S/ Michael Madnick
    -----------------------------------------
    Title: Director

THE BANK OF NOVA SCOTIA

By: /S/Todd S. Meller
    -----------------------------------------
    Title: Managing Director

SUNTRUST BANK

By: /S/ Robert Bugbee
    -----------------------------------------
    Title: Director

THE BANK OF NEW YORK

By: /S/ Ernest Fung
    -----------------------------------------
    Title: Vice President

COMMERZBANK AG, NEW YORK AND GRAND CAYMAN BRANCHES

By: /S/ Robert Traylor
    -----------------------------------------
    Title: Senior Vice President

By: /S/ Andrew P. Lusk
    -----------------------------------------
    Title: Vice President

FORTIS CAPITAL CORP.

By: /S/ Kathleen de Lathauwe
    -----------------------------------------
    Title: Senior Vice President

<PAGE>

By: /S/ Diran Cholakian
    -----------------------------------------
    Title: Vice President

BAYERISCHE HYPO-UND VERSEINSBANK AG, NEW YORK BRANCH

By: /S/
    -----------------------------------------
    Title: Director

By: /S/
    -----------------------------------------
    Title: Associate Director

PNC BANK, NATIONAL ASSOCIATION

By: /S/
    -----------------------------------------
    Title: Senior Vice President

SUMITOMO MITSUI BANKING CORP., NEW YORK

By: /S/ Edward McColly
    -----------------------------------------
    Title: Vice President & Dept. Head

UFJ BANK LIMITED

By: /S/
    -----------------------------------------
    Title: Vice President

BANK OF CHINA, NEW YORK BRANCH

By: /S/
    -----------------------------------------
    Title: Chief Lending Officer

KBC BANK, N.V.

By: /S/ R. Snauffer
    -----------------------------------------
    Title: First Vice President

By: /S/ Robert M. Surdam, Jr.
    -----------------------------------------
    Title: Vice PresidentExhibit 10.1(c)

             LETTER AMENDMENT NO. 2 TO FIVE YEAR TERM LOAN AGREEMENT

                                        Dated as of November 11, 2005

To the banks, financial institutions
        and other institutional lenders
        (collectively, the "Lenders") parties
        to the Credit Agreement referred to
        below and to Citicorp North America, Inc., as agent
        (the "Agent") for the Lenders

Ladies and Gentlemen:

               We refer to the Five Year Term Loan Agreement dated as of
February 15, 2005, as amended as of March 1, 2005 (the "Credit Agreement") among
the undersigned and you. Capitalized terms not otherwise defined in this Letter
Amendment have the same meanings as specified in the Credit Agreement.

               It is hereby agreed by you and us as follows:

               (a)  The last sentence of Section 2.09(a) of the Credit Agreement
is, effective as of the date of this Letter Amendment, hereby amended in full to
read as follows:

               Each such prepayment shall be applied to the installments of the
Advances in forward order of maturity.

               (b)  The second sentence of Section 2.09(b)(iv) of the Credit
Agreement is, effective as of the date of this Letter Amendment, hereby amended
in full to read as follows:

               Each such prepayment shall be applied to the installments of the
Advances in forward order of maturity.

               (c)  Exhibit F to the Credit Agreement is, effective as of the
date of this Letter Amendment, hereby amended by deleting from Section 1 thereof
the phrase "any Hedge Agreements entered into by the Company and any Lender" and
substituting therefor the phrase "any Hedge Agreements entered into by the
Company and any Lender or any Affiliate of any Lender".

               This Letter Amendment shall become effective as of the date first
above written when, and only when, the Agent shall have received counterparts of
this Letter Amendment executed by the undersigned and the Required Lenders or,
as to any of the Lenders, advice satisfactory to the Agent that such Lender has
executed this Letter Amendment.

<PAGE>

               On and after the effectiveness of this Letter Amendment, each
reference in the Credit Agreement to "this Agreement", "hereunder", "hereof" or
words of like import referring to the C1redit Agreement, and each reference in
the Notes and each of the other Loan Documents, if any, to "the Credit
Agreement", "thereunder", "thereof" or words of like import referring to the
Credit Agreement, shall mean and be a reference to the Credit Agreement, as
amended by this Letter Amendment.

               The Credit Agreement, the Notes and each of the other Loan
Documents, as specifically amended by this Letter Amendment, are and shall
continue to be in full force and effect and are hereby in all respects ratified
and confirmed. The execution, delivery and effectiveness of this Letter
Amendment shall not, except as expressly provided herein, operate as a waiver of
any right, power or remedy of any Lender or the Agent under the Credit
Agreement, nor constitute a waiver of any provision of the Credit Agreement.

               If you agree to the terms and provisions hereof, please evidence
such agreement by executing and returning at least three counterparts of this
Letter Amendment to Susan L. Hobart, Shearman & Sterling LLP, 599 Lexington
Avenue, New York, New York 10022.

               This Letter Amendment may be executed in any number of
counterparts and by different parties hereto in separate counterparts, each of
which when so executed shall be deemed to be an original and all of which taken
together shall constitute one and the same agreement. Delivery of an executed
counterpart of a signature page to this Letter Amendment by telecopier shall be
effective as delivery of a manually executed counterpart of this Letter
Amendment.

               This Letter Amendment shall be governed by, and construed in
accordance with, the laws of the State of New York.

                                                     Very truly yours,

                                                     CYTEC INDUSTRIES INC.

                                                     By: /S/ T. Wozniak
                                                         -----------------------
                                                         Title: Treasurer

Agreed as of the date first above written:

CITICORP NORTH AMERICA, INC.,
        as Agent and as Lender

By: /S/ Irina Lurye
    ---------------------------------------------
    Title: Director

<PAGE>

WACHOVIA BANK, NATIONAL ASSOCIATION

By: /S/Barbara Van Meerten
    ---------------------------------------------
    Title: Director

ABN AMRO BANK N.V.

By: /S/ Robert H. Steelman
    ---------------------------------------------
    Title: Director

By: /S/ Christopher M. Plumb
    ---------------------------------------------
    Title: Vice President

CALYON NEW YORK BRANCH

By
    ---------------------------------------------
    Title:

By
    --------------------------------------------
    Title:

THE BANK OF NOVA SCOTIA

By: /S/ Thane Rattew
    ---------------------------------------------
    Title: Managing Director

SUNTRUST BANK

By: /S/ Robert Maddox
    ---------------------------------------------
    Title: Vice President

THE BANK OF NEW YORK

By: /S/ Ernest Fung
    ---------------------------------------------
    Title: Vice President

COMMERZBANK AG, NEW YORK AND GRAND CAYMAN BRANCHES

By: /S/ Robert Traylor
    ---------------------------------------------
    Title: Senior Vice President

By: /S/ Andrew P. Lusk
    ---------------------------------------------
    Title: Vice President

<PAGE>

FORTIS CAPITAL CORP.

By: /S/ John W. Deegan
    ---------------------------------------------
    Title: Senior Vice President

By: /S/ Douglas Riahi
    ---------------------------------------------
    Title: Managing Director

BAYERISCHE HYPO-UND VERSEINSBANK AG, NEW YORK BRANCH

By
    ---------------------------------------------
    Title:

By
    ---------------------------------------------
    Title:

PNC BANK, NATIONAL ASSOCIATION

By: /S/ Michael Nardo
    ---------------------------------------------
    Title: Senior Vice President

SUMITOMO MITSUI BANKING CORP., NEW YORK

By: /S/ David A. Buck
    ---------------------------------------------
    Title: Senior Vice President

UFJ BANK LIMITED

By
    ---------------------------------------------
    Title:

BANK OF CHINA, NEW YORK BRANCH

By: /S/ William W. Smith
    ---------------------------------------------
    Title: Deputy General Manager

KBC BANK, N.V.

By: /S/ Robert M. Surdam, Jr.
    ---------------------------------------------
    Title: Vice President

By: /S/ Michael V. Curran
    ---------------------------------------------
    Title: First Vice President

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