Exhibit 4.1

FIRST SUPPLEMENTAL INDENTURE

FIRST SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), dated as of January 31, 2013, by and among Hexion U.S. Finance Corp., a Delaware corporation (the “Issuer”), Momentive Specialty Chemicals Inc., a New Jersey corporation (“Holdings”), the Subsidiary Guarantors party hereto (the “Subsidiary Guarantors” and, together with Holdings, the “Guarantors”) and Wilmington Trust, National Association, as trustee under the indenture referred to below (the “Trustee”).

W I T N E S S E T H :

WHEREAS, the Issuer and Guarantors have heretofore executed and delivered to the Trustee an Indenture (the “Indenture”), dated as of March 14, 2012, providing for the issuance of the Issuer’s 6.625% First-Priority Senior Secured Notes due 2020 (the “Notes”), initially in the aggregate principal amount of $450,000,000 (the “Existing Notes”);

WHEREAS, on the date hereof the Issuer intends to issue an aggregate principal amount of $1,100,000,000 of the Notes (the “New Notes”), which shall be Additional Notes under the Indenture;

WHEREAS, the issuance and sale of the New Notes has been authorized by resolutions adopted by the Board of Directors of Holdings;

WHEREAS, the Existing Notes and the New Notes will be treated as a single series of Notes for all purposes of the Indenture (as supplemented by this Supplemental Indenture, including, without limitation, waivers, amendments, redemptions and offers to purchase);

WHEREAS, the Incurrence of the Indebtedness represented by the New Notes is permitted as of the date hereof by Sections 4.03 and 4.12 of the Indenture and the New Notes will be issued in compliance with the other applicable provisions of the Indenture;

WHEREAS, pursuant to Sections 2.01 and 9.01(x) of the Indenture, the Issuer, the Guarantors and the Trustee are authorized to execute and deliver this Supplemental Indenture to provide for the issuance of the New Notes;

WHEREAS the Issuer has complied with all conditions precedent provided for in the Indenture relating to this Supplemental Indenture; and

WHEREAS the Issuer has requested that the Trustee execute and deliver this Supplemental Indenture.

NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, the Issuer, the Guarantors and the Trustee mutually covenant and agree for the equal and ratable benefit of the Holders of the Notes as follows:

SECTION 1. Defined Terms. As used in this Supplemental Indenture, terms defined in the Indenture or in the preamble or recital hereto are used herein as therein defined. The words “herein,” “hereof” and “hereby” and other words of similar import used in this Supplemental Indenture refer to this Supplemental Indenture as a whole and not to any particular section hereof.

SECTION 2. Terms of New Notes. The terms of the New Notes shall be identical to the Existing Notes issued on the Issue Date other than with respect to the following:

SECTION 3. Execution of the Notes. The Notes shall be executed on behalf of the Issuer by an Officer and authenticated by the Trustee pursuant to Section 2.03 of the Indenture.

SECTION 4. Ratification of Indenture; Supplemental Indentures Part of Indenture. Except as expressly amended hereby, the Indenture is in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect. This Supplemental Indenture shall form a part of the Indenture for all purposes, and every Holder of the Notes heretofore or hereafter authenticated and delivered shall be bound hereby.

SECTION 5. Governing Law. THIS SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

SECTION 6. Trustee Makes No Representation. The Trustee makes no representation as to the validity or sufficiency of this Supplemental Indenture.

SECTION 7. Counterparts. The parties may sign any number of copies of this Supplemental Indenture. Each signed copy shall be an original, but all of them together represent the same agreement.

SECTION 8. Effect of Headings. The Section headings herein are for convenience only and shall not affect the construction thereof.

IN WITNESS WHEREOF, the parties have caused this Supplemental Indenture to be duly executed as of the date first written above.

[Signature Page to First Supplemental Indenture]

[Signature Page to First Supplemental Indenture]

[Signature Page to First Supplemental Indenture]

Exhibit A

[FORM OF FACE OF GLOBAL NOTE]

[Global Notes Legend]

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC”), NEW YORK, NEW YORK, TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO., OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC) ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

TRANSFERS OF THIS GLOBAL NOTE SHALL BE LIMITED TO TRANSFERS IN WHOLE, BUT NOT IN PART, TO NOMINEES OF DTC OR TO A SUCCESSOR THEREOF OR SUCH SUCCESSOR’S NOMINEE AND TRANSFERS OF PORTIONS OF THIS GLOBAL NOTE SHALL BE LIMITED TO TRANSFERS MADE IN ACCORDANCE WITH THE RESTRICTIONS SET FORTH IN THE INDENTURE REFERRED TO ON THE REVERSE HEREOF.

[[FOR REGULATION S GLOBAL NOTE ONLY] UNTIL 40 DAYS AFTER THE LATER OF COMMENCEMENT OR COMPLETION OF THE OFFERING, AN OFFER OR SALE OF NOTES WITHIN THE UNITED STATES BY A DEALER (AS DEFINED IN THE SECURITIES ACT) MAY VIOLATE THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT IF SUCH OFFER OR SALE IS MADE OTHERWISE THAN IN ACCORDANCE WITH RULE 144A THEREUNDER.]

[Restricted Notes Legend for Notes Offered Otherwise than in Reliance on Regulation S]

THIS NOTE (OR ITS PREDECESSOR) WAS ORIGINALLY ISSUED IN A TRANSACTION EXEMPT FROM REGISTRATION UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND THIS NOTE MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION OR AN APPLICABLE EXEMPTION THEREFROM. EACH PURCHASER OF THIS NOTE IS HEREBY NOTIFIED THAT THE SELLER OF THIS NOTE MAY BE RELYING ON THE EXEMPTION FROM THE PROVISIONS OF SECTION 5 OF THE SECURITIES ACT PROVIDED BY RULE 144A THEREUNDER.

THE HOLDER OF THIS NOTE AGREES FOR THE BENEFIT OF THE ISSUER THAT (A) THIS NOTE MAY BE OFFERED, RESOLD, PLEDGED OR OTHERWISE TRANSFERRED, ONLY (I) TO THE ISSUER, (II) WITHIN THE UNITED STATES TO A PERSON WHOM THE SELLER REASONABLY BELIEVES IS A QUALIFIED INSTITUTIONAL BUYER (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT) IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A, (III) TO AN INSTITUTIONAL “ACCREDITED INVESTOR” WITHIN THE MEANING OF RULE 501(A)(1), (2), (3) OR (7) OF REGULATION D UNDER THE SECURITIES ACT THAT, PRIOR TO SUCH TRANSFER, FURNISHES THE TRUSTEE A SIGNED LETTER CONTAINING CERTAIN REPRESENTATIONS AND AGREEMENTS RELATING TO THE TRANSFER OF THIS NOTE (THE FORM OF WHICH CAN BE OBTAINED FROM THE TRUSTEE) AND, IF SUCH TRANSFER IS IN RESPECT OF AN AGGREGATE PRINCIPAL AMOUNT OF NOTES LESS THAN $250,000, AN OPINION OF COUNSEL ACCEPTABLE TO THE ISSUER THAT SUCH TRANSFER IS IN COMPLIANCE WITH THE SECURITIES ACT, (IV) OUTSIDE THE UNITED STATES IN AN OFFSHORE TRANSACTION IN ACCORDANCE WITH RULE 904 UNDER THE SECURITIES ACT, (V) PURSUANT TO AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT PROVIDED BY RULE 144 THEREUNDER (IF AVAILABLE) OR (VI) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT, IN EACH OF CASES (I) THROUGH (VI) IN ACCORDANCE WITH ANY APPLICABLE SECURITIES LAWS OF ANY STATE OF THE UNITED STATES, AND (B) THE HOLDER WILL, AND EACH SUBSEQUENT HOLDER IS REQUIRED TO, NOTIFY ANY PURCHASER OF THIS NOTE FROM IT OF THE RESALE RESTRICTIONS REFERRED TO IN (A) ABOVE.

[Restricted Notes Legend for Notes Offered in Reliance on Regulation S.]

THIS NOTE (OR ITS PREDECESSOR) WAS ORIGINALLY ISSUED IN A TRANSACTION ORIGINALLY EXEMPT FROM REGISTRATION UNDER THE U.S. SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND MAY NOT BE TRANSFERRED IN THE UNITED STATES OR TO, OR FOR THE ACCOUNT OR BENEFIT OF, ANY U.S. PERSON EXCEPT PURSUANT TO AN AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND ALL APPLICABLE STATE SECURITIES LAWS. TERMS USED ABOVE HAVE THE MEANINGS GIVEN TO THEM IN REGULATION S UNDER THE SECURITIES ACT.

[Temporary Regulation S Global Note Legend]

EXCEPT AS SET FORTH BELOW, BENEFICIAL OWNERSHIP INTERESTS IN THIS TEMPORARY REGULATION S GLOBAL NOTE WILL NOT BE EXCHANGEABLE FOR INTERESTS IN THE PERMANENT REGULATION S GLOBAL NOTE OR ANY OTHER NOTE REPRESENTING AN INTEREST IN THE NOTES REPRESENTED HEREBY WHICH DO NOT CONTAIN A LEGEND CONTAINING RESTRICTIONS ON TRANSFER, UNTIL THE EXPIRATION OF THE “40-DAY DISTRIBUTION COMPLIANCE PERIOD” (WITHIN THE MEANING OF RULE 903(B)(2) OF REGULATION S UNDER THE SECURITIES ACT) AND THEN ONLY UPON CERTIFICATION TO THE TRUSTEE THAT SUCH BENEFICIAL INTERESTS ARE OWNED EITHER BY NON-U.S. PERSONS OR U.S. PERSONS WHO PURCHASED SUCH INTERESTS IN A TRANSACTION THAT DID NOT REQUIRE REGISTRATION UNDER THE SECURITIES ACT. DURING SUCH 40-DAY DISTRIBUTION COMPLIANCE PERIOD, BENEFICIAL OWNERSHIP INTERESTS IN THIS TEMPORARY REGULATION S GLOBAL NOTE MAY ONLY BE SOLD, PLEDGED OR TRANSFERRED (I) TO THE ISSUER, (II) OUTSIDE THE UNITED STATES IN A TRANSACTION IN ACCORDANCE WITH RULE 904 OF REGULATION S UNDER THE SECURITIES ACT, OR (III) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT, IN EACH OF CASES (I) THROUGH (III) IN ACCORDANCE WITH ANY APPLICABLE SECURITIES LAWS OF ANY STATE OF THE UNITED STATES. HOLDERS OF INTERESTS IN THIS TEMPORARY REGULATION S GLOBAL NOTE WILL NOTIFY ANY PURCHASER OF THIS NOTE OF THE RESALE RESTRICTIONS REFERRED TO ABOVE, IF THEN APPLICABLE.

AFTER THE EXPIRATION OF THE DISTRIBUTION COMPLIANCE PERIOD, BENEFICIAL INTERESTS IN THIS TEMPORARY REGULATION S GLOBAL NOTE MAY BE EXCHANGED FOR INTERESTS IN A RULE 144A GLOBAL NOTE ONLY IF (1) SUCH EXCHANGE OCCURS IN CONNECTION WITH A TRANSFER OF THE NOTES IN COMPLIANCE WITH RULE 144A AND (2) THE TRANSFEROR OF THE REGULATION S GLOBAL NOTE FIRST DELIVERS TO THE TRUSTEE A WRITTEN CERTIFICATE (IN THE FORM ATTACHED TO THIS CERTIFICATE) TO THE EFFECT THAT THE REGULATION S GLOBAL NOTE IS BEING TRANSFERRED (A) TO A PERSON WHO THE TRANSFEROR REASONABLY BELIEVES TO BE A QUALIFIED INSTITUTIONAL BUYER WITHIN THE MEANING OF RULE 144A, (B) TO A PERSON WHO IS PURCHASING FOR ITS OWN ACCOUNT OR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A, AND (C) IN ACCORDANCE WITH ALL APPLICABLE SECURITIES LAWS OF THE STATES OF THE UNITED STATES AND OTHER JURISDICTIONS.

AFTER THE EXPIRATION OF THE DISTRIBUTION COMPLIANCE PERIOD, BENEFICIAL INTERESTS IN THIS TEMPORARY REGULATION S GLOBAL NOTE MAY BE EXCHANGED FOR INTERESTS IN AN IAI GLOBAL NOTE ONLY IF (1) SUCH EXCHANGE OCCURS IN CONNECTION WITH A TRANSFER OF THE NOTES IN COMPLIANCE WITH AN EXEMPTION UNDER THE SECURITIES ACT AND (2) THE TRANSFEROR OF THE REGULATION S GLOBAL NOTE FIRST DELIVERS TO THE TRUSTEE A WRITTEN CERTIFICATE (IN THE FORM ATTACHED TO THIS CERTIFICATE) TO THE EFFECT THAT THE REGULATION S GLOBAL NOTE IS BEING TRANSFERRED (A) TO AN INSTITUTIONAL “ACCREDITED INVESTOR” WITHIN THE MEANING OF RULE 501(A)(1),(2),(3) OR (7) UNDER THE SECURITIES ACT THAT, PRIOR TO SUCH TRANSFER, FURNISHES THE TRUSTEE A SIGNED LETTER CONTAINING CERTAIN REPRESENTATIONS AND AGREEMENTS RELATING TO THE TRANSFER OF THIS NOTE (THE FORM OF WHICH CAN BE OBTAINED FROM THE TRUSTEE) AND, IF SUCH TRANSFER IS IN RESPECT OF AN AGGREGATE PRINCIPAL AMOUNT OF NOTES LESS THAN $250,000, AN OPINION OF COUNSEL ACCEPTABLE TO THE ISSUER THAT SUCH TRANSFER IS IN COMPLIANCE WITH THE SECURITIES ACT AND (B) IN ACCORDANCE WITH ALL APPLICABLE SECURITIES LAWS OF THE STATES OF THE UNITED STATES AND OTHER JURISDICTIONS.

BENEFICIAL INTERESTS IN A RULE 144A GLOBAL NOTE OR AN IAI GLOBAL NOTE MAY BE TRANSFERRED TO A PERSON WHO TAKES DELIVERY IN THE FORM OF AN INTEREST IN THE REGULATION S GLOBAL NOTE, WHETHER BEFORE OR AFTER THE EXPIRATION OF THE 40-DAY DISTRIBUTION COMPLIANCE PERIOD, ONLY IF THE TRANSFEROR FIRST DELIVERS TO THE TRUSTEE A WRITTEN CERTIFICATE (IN THE FORM ATTACHED TO THIS CERTIFICATE) TO THE EFFECT THAT SUCH TRANSFER IS BEING MADE IN ACCORDANCE WITH RULE 903 OR 904 OF REGULATION S OR RULE 144 (IF AVAILABLE).

[Definitive Notes Legend]

IN CONNECTION WITH ANY TRANSFER, THE HOLDER WILL DELIVER TO THE REGISTRAR AND TRANSFER AGENT SUCH CERTIFICATES AND OTHER INFORMATION AS SUCH TRANSFER AGENT MAY REASONABLY REQUIRE TO CONFIRM THAT THE TRANSFER COMPLIES WITH THE FOREGOING RESTRICTIONS.

HEXION U.S. FINANCE CORP.

6.625% First-Priority Senior Secured Notes due 2020

144A CUSIP No. [            ]

144A ISIN No. [            ]

REG S CUSIP No. [            ]

REG S ISIN No. [            ]

HEXION U.S. FINANCE CORP., a Delaware corporation promises to pay to [            ], or its registered assigns, the principal sum of [            ] Dollars ($[            ]) on April 15, 2020.

Interest Payment Dates: April 15 and October 15

Record Dates: April 1 and October 1

Additional provisions of this Note are set forth on the other side of this Note.

Dated: January 31, 2013

[SIGNATURE PAGE FOLLOWS]

IN WITNESS WHEREOF, the Issuer has caused this instrument to be duly executed.

Dated:

TRUSTEE’S CERTIFICATE OF

    AUTHENTICATION

[FORM OF REVERSE SIDE OF INITIAL NOTE]

6.625% First-Priority Senior Secured Notes Due 2020

1. Interest

Hexion U.S. Finance Corp., a Delaware corporation (such Person, and its successors and assigns under the Indenture hereinafter referred to, being herein called the “Issuer”), promises to pay interest on the principal amount of this Note at a rate per annum of 6.625%; provided, however, that if a Registration Default (as defined in the Registration Rights Agreement) occurs, additional interest will accrue on this Note at a rate of 0.25% per annum (increasing by an additional 0.25% per annum after each consecutive 90-day period that occurs after the date on which such Registration Default occurs up to a maximum additional interest rate of 1.00%) from and including the date on which any such Registration Default shall occur to but excluding the earlier of (x) the date on which all Registration Defaults have been cured and (y) the date which is two years from January 31, 2013. The Issuer will pay interest semiannually in arrears to the holders of record of the Notes on April 15 and October 15 of each year, commencing April 15, 2013. Interest on the Notes will accrue from the most recent date to which interest has been paid or, if no interest has been paid, from October 15, 2012. Interest will be computed on the basis of a 360-day year of twelve 30-day months. The Issuer will pay interest on overdue principal at the rate borne by this Note plus 1.00% per annum, and it will pay interest on overdue installments of interest at the same rate to the extent lawful.

2. Method of Payment

The Issuer will pay interest on the Notes (except defaulted interest) to the Persons who are registered holders of Notes at the close of business on the April 1 or October 1 next preceding the interest payment date even if Notes are canceled after the record date and on or before the interest payment date. Holders must surrender Notes to a Paying Agent to collect principal payments. The Issuer will pay principal and interest in money of the United States that at the time of payment is legal tender for payment of public and private debts. Payments in respect of the Notes represented by a Global Note (including principal, premium and interest) will be made by wire transfer of immediately available funds to the accounts specified by the Depository. The Issuer will make all payments in respect of a certificated Note (including principal, premium and interest) by mailing a check to the registered address of each Holder thereof; provided, however, that payments on a certificated Note will be made by wire transfer to a U.S. dollar account maintained by the payee with a bank in the United States if such Holder elects payment by wire transfer by giving written notice to the Trustee or the Paying Agent to such effect designating such account no later than 30 days immediately preceding the relevant due date for payment (or such other date as the Trustee may accept in its discretion).

3. Paying Agent and Registrar

Initially, Wilmington Trust, National Association (the “Trustee”) will act as Paying Agent and Registrar. The Issuer may appoint and change any Paying Agent, Registrar or co-registrar without notice. Holdings or any of its domestically incorporated Wholly Owned Subsidiaries may act as Paying Agent, Registrar or co-registrar.

4. Indenture

The Issuer issued the Notes under an Indenture dated as of March 14, 2012 (as supplemented to the date hereof, the “Indenture”), among the Issuer, the Guarantors and the Trustee. The terms of the Notes include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939 (15 U.S.C. §§ 77aaa-77bbbb) (the “Act”). Terms defined in the Indenture and not defined herein have the meanings ascribed thereto in the Indenture. The Notes are subject to all such terms, and holders of the Notes are referred to the Indenture and the Act for a statement of those terms.

The Notes are secured obligations of the Issuer and consist of (i) $450,000,000 aggregate principal amount of 6.625% First-Priority Senior Secured Notes due 2020 issued on March 14, 2012, (ii) $1,100,000,000 aggregate principal amount of 6.625% First-Priority Senior Secured Notes due 2020 issued on January 31, 2013 as Additional Notes under the Indenture, including this Note, and (iii) any other Additional Notes that may be issued after the Issue Date. The Indenture contains covenants that, among other things, limit the ability of Holdings and its Restricted Subsidiaries to incur additional indebtedness; pay dividends or distributions on, or redeem or repurchase capital stock; make investments; engage in transactions with affiliates; create liens on assets to secure indebtedness; transfer or sell assets; guarantee indebtedness; restrict dividends or other payments of subsidiaries; consolidate, merge or transfer all or substantially all of its assets; and engage in sale/leaseback transactions. These covenants are subject to important exceptions and qualifications contained in the Indenture.

5. Optional Redemption

Except as set forth below, the Issuer shall not be entitled to redeem the Notes.

On and after April 15, 2015, the Issuer shall be entitled at its option on one or more occasions to redeem all or a portion of the Notes upon not less than 30 nor more than 60 days’ notice, at the following redemption prices (expressed in percentages of principal amount on the redemption date), plus accrued and unpaid interest and additional interest, if any, to the redemption date (subject to the right of Holders of record on the relevant record date to receive interest due on the relevant interest payment date), if redeemed during the 12-month period commencing on April 15th of the years set forth below:

In addition, prior to April 15, 2015, the Issuer may redeem Notes at its option, in whole at any time or in part from time to time, upon not less than 30 nor more than 60 days’ prior notice mailed by first-class mail to each Holder’s registered address, at a redemption price equal to 100% of the principal amount of the Notes redeemed plus the Applicable Premium as of, and accrued and unpaid interest and additional interest, if any, to the applicable redemption date (subject to the right of holders of record on the relevant record date to receive interest due on the relevant interest payment date).

During any twelve month period prior to April 15, 2015, the Issuer may redeem up to 10% of the original aggregate principal amount of the Notes (calculated after giving effect to any issuance of Additional Notes) at a redemption price of 103%, plus accrued and unpaid interest and additional interest, if any, to the redemption date (subject to the right of holders of record on the relevant record date to receive interest due on the relevant interest payment date).

Notwithstanding the foregoing, prior to April 15, 2015, the Issuer shall upon not less than 30 nor more than 60 days’ notice, be entitled at their option on one or more occasions to redeem Notes (which includes Additional Notes) in an aggregate principal amount not to exceed 35% of the original aggregate principal amount of the Notes (which includes Additional Notes) originally issued at a redemption price of 106.625% of the principal amount thereof, plus accrued and unpaid interest and additional interest, if any, to the redemption date (subject to the right of Holders of record on the relevant record date to receive interest due on the relevant interest payment date), with the net cash proceeds from one or more Equity Offerings (1) by Holdings or (2) by any direct or indirect parent of Holdings, in each case, to the extent the net cash proceeds thereof are contributed to the common equity capital of Holdings or used to purchase Capital Stock (other than Disqualified Stock) of Holdings from it; provided, however, that (1) at least 65% of such aggregate principal amount of Notes (which includes Additional Notes) remains outstanding immediately after the occurrence of each such redemption; and (2) each such redemption occurs within 90 days after the consummation of the related Equity Offering. Notwithstanding the foregoing, the Issuer may at any time and from time to time purchase Notes in the open market or otherwise.

Notice of any redemption upon any Equity Offering may be given prior to the completion thereof, and any such redemption or notice may, at Holding’s discretion, be subject to one or more conditions precedent, including, but not limited to, completion of the related Equity Offering.

6. Notice of Redemption

Notice of redemption will be mailed by first-class mail at least 30 days but not more than 60 days before the redemption date to each Holder of Notes to be redeemed at his registered address. Notes in denominations larger than $2,000 principal amount may be redeemed in part but only in whole multiples of $1,000. If money sufficient to pay the redemption price of and accrued interest on all Notes (or portions thereof) to be redeemed on the redemption date is deposited with the Paying Agent on or before the redemption date and certain other conditions are satisfied, on and after such date interest ceases to accrue on such Notes (or such portions thereof) called for redemption.

7. Put Provisions

The occurrence of any Change of Control will constitute an Event of Default under the Indenture unless the Issuer (i)(A) makes an offer within 30 days following such Change of Control to all holders of the Notes to purchase all the Notes properly tendered (a “Change of Control Offer”) at a purchase price (the “Change of Control Purchase Price”) equal to 101% of the principal amount thereof, plus accrued and unpaid interest (if any) and additional interest, if any, to the date of repurchase (subject to the right of holders of record on the relevant record date to receive interest due on the relevant interest payment date); and (B) purchases all the Notes properly tendered in accordance with the Change of Control Offer or (ii) exercises its right, within 30 days following such Change of Control, to redeem all the Notes as described under paragraph 5 of this Note.

8. Guarantee

The payment by the Issuer of the principal of, and premium and interest on, the Notes is fully and unconditionally guaranteed on a joint and several basis by each of the Guarantors to the extent set forth in the Indenture.

9. Security

The Notes will be secured by the Collateral on the terms and subject to the conditions set forth in the Indenture and the Security Documents, such security interest to be pari passu in priority to security interests granted for the benefit of holders of other First-Priority Lien Obligations. The First Lien Collateral Agent holds the Collateral in trust for the benefit of the Trustee and the Holders pursuant to the Security Documents and the First Lien Intercreditor Agreement. Each Holder, by accepting this Note, consents and agrees to the terms of the Security Documents (including the provisions providing for the foreclosure and release of Collateral) and the First Lien Intercreditor Agreement and the Junior Priority Intercreditor Agreements in effect or as they may be amended from time to time in accordance with their terms and the Indenture and authorizes and directs the First Lien Collateral Agent to enter into the Collateral Agreement Supplement, any other Security Documents and the First Lien Intercreditor Agreement and the joinders to the Junior Priority Intercreditors Agreements, and to perform its obligations and exercise its rights thereunder in accordance therewith.

10. Denominations; Transfer; Exchange

The Notes are in registered form without coupons in denominations of $2,000 principal amount and whole multiples of $1,000. A Holder may transfer or exchange Notes in accordance with the Indenture. The Registrar may require a Holder, among other things, to furnish appropriate endorsements or transfer documents and to pay any taxes and fees required by law or permitted by the Indenture. The Registrar need not register the transfer of or exchange any Notes selected for redemption (except, in the case of a Note to be redeemed in part, the portion of the Note not to be redeemed) or any Notes for a period of 15 days before a selection of Notes to be redeemed or 15 days before an interest payment date.

11. Persons Deemed Owners

The registered Holder of this Note may be treated as the owner of it for all purposes.

12. Unclaimed Money

If money for the payment of principal or interest remains unclaimed for two years, the Trustee or Paying Agent shall pay the money back to the Issuer at its request unless an abandoned property law designates another Person. After any such payment, Holders entitled to the money must look only to the Issuer and not to the Trustee for payment.

13. Discharge and Defeasance

Subject to certain conditions set forth in the Indenture, the Issuer at any time shall be entitled to terminate some or all of their and the Guarantors’ obligations under the Notes and the Indenture if the Issuer deposits with the Trustee money or, in certain cases, U.S. Government Obligations for the payment of principal and interest on the Notes to redemption or maturity, as the case may be.

14. Amendment, Waiver

Subject to certain exceptions set forth in the Indenture, (a) the Indenture, the Security Documents, the First Lien Intercreditor Agreement, the Junior Priority Intercreditor Agreements and the Notes may be amended with the written consent of the Holders of at least a majority in principal amount outstanding of the Notes voting as a single class (which consents may be obtained in connection with a tender offer or exchange offer for the Notes) and (b) any default or noncompliance with any provision may be waived with the written consent of the Holders of a majority in principal amount outstanding of the Notes voting as a single class (which consents may be obtained in connection with a tender offer or exchange offer for the Notes). Subject to certain exceptions set forth in the Indenture, without the consent of any Noteholder, the Issuer, the Guarantors and the Trustee shall be entitled to amend the Indenture, the Security Documents, the First Lien Intercreditor Agreement, the Junior Priority Intercreditor Agreements or the Notes to cure any ambiguity, omission, defect, mistake or inconsistency, or to comply with Article 5 of the Indenture, or to provide for uncertificated Notes in addition to or in place of certificated Notes, or to add guarantees with respect to the Notes, including Guarantees, or to secure the Notes, or to add additional assets as Collateral, or to release Collateral when permitted or required under the Indenture or the Security Documents, or to add additional secured creditors holding Junior Priority Obligations or other First Priority Lien Obligations so long as such obligations are not prohibited by the Indenture, or to additional covenants or surrender rights and powers conferred on the Issuer or the Guarantors, or to conform the text of the Indenture, the Notes, the Security Documents, the First Lien Intercreditor Agreement or the Junior Priority Intercreditor Agreements, to any provision of the section captioned “Description of Notes” in the Offering Circular to the extent such provision was intended by the Issuer to be a verbatim recitation of a provision of the Indenture, the Notes, the Security Documents, the First Lien Intercreditor Agreement or the Junior Priority Intercreditor Agreements, or to comply with any requirement of the SEC in connection with qualifying the Indenture under the Act, to make the changes contemplated pursuant to Article 12 of the Indenture in connection with an ABL Transaction and changes in furtherance thereof, to make certain changes to the Indenture to provide for the issuance of Additional Notes or to make any change that does not adversely affect the rights of any Noteholder, or to make amendments to provisions of the Indenture relating to the transfer and legending of the Notes.

15. Defaults and Remedies

Under the Indenture, Events of Default include (a) default for 30 days in payment of interest on the Notes; (b) default in payment of principal on the Notes at maturity, upon redemption pursuant to paragraph 5 of the Notes, upon acceleration or otherwise, or the failure by the Issuer to redeem or purchase Notes when required; (c) failure by the Issuer or certain Subsidiaries to comply with other agreements in the Indenture or the Notes, in certain cases subject to notice and lapse of time; (d) certain accelerations (including failure to pay within any grace period after final maturity) of other Indebtedness of the Issuer if the amount accelerated (or so unpaid) exceeds $35.0 million; (e) certain events of bankruptcy or insolvency with respect to the Issuer, the Guarantors and the Significant Subsidiaries; (f) certain judgments or decrees for the payment of money in excess of $35.0 million; (g) certain defaults with respect to Guarantees; and (h) certain defaults relating to the Collateral under the Security Documents. If an Event of Default occurs and is continuing, the Trustee or the Holders of at least 25% in principal amount of the Notes may declare all such Notes to be due and payable immediately, subject to certain conditions set forth in the Indenture. Certain events of bankruptcy or insolvency are Events of Default which will result in the Notes being due and payable immediately upon the occurrence of such Events of Default.

Noteholders may not enforce the Indenture or the Notes except as provided in the Indenture. The Trustee may refuse to enforce the Indenture or the Notes unless it receives indemnity or security reasonably satisfactory to it. Subject to certain limitations, Holders of a majority in principal amount of the Notes may direct the Trustee in its exercise of any trust or power. The Trustee may withhold from Noteholders notice of any continuing Default (except a Default in payment of principal or interest) if it determines that withholding notice is in the interest of the Holders.

16. Trustee Dealings with the Issuer

Subject to certain limitations imposed by the Act, the Trustee under the Indenture, in its individual or any other capacity, may become the owner or pledgee of Notes and may otherwise deal with and collect obligations owed to it by the Issuer or its Affiliates and may otherwise deal with the Issuer or its Affiliates with the same rights it would have if it were not Trustee.

17. No Recourse Against Others

A director, officer, employee or stockholder, as such, of the Issuer or the Trustee shall not have any liability for any obligations of the Issuer under the Notes or the Indenture or for any claim based on, in respect of or by reason of such obligations or their creation; provided, however, the foregoing will not affect or limit any liability of any Guarantor under the Indenture or its Guarantee. By accepting a Note, each Noteholder waives and releases all such liability. The waiver and release are part of the consideration for the issue of the Notes.

18. Authentication

This Note shall not be valid until an authorized signatory of the Trustee (or an authenticating agent) manually signs the certificate of authentication on the other side of this Note.

19. Abbreviations

Customary abbreviations may be used in the name of a Noteholder or an assignee, such as TEN COM (=tenants in common), TEN ENT (=tenants by the entireties), JT TEN (=joint tenants with rights of survivorship and not as tenants in common), CUST (=custodian), and U/G/M/A (=Uniform Gift to Minors Act).

20. CUSIP Numbers

Pursuant to a recommendation promulgated by the Committee on Uniform Security Identification Procedures the Issuer has caused CUSIP numbers to be printed on the Notes and has directed the Trustee to use CUSIP numbers in notices of redemption as a convenience to Noteholders. No representation is made as to the accuracy of such numbers either as printed on the Notes or as contained in any notice of redemption and reliance may be placed only on the other identification numbers placed thereon.

21. Holders’ Compliance with Registration Rights Agreement

Each Holder of a Note, by acceptance hereof, acknowledges and agrees to the provisions of the Registration Rights Agreement, including the obligations of the Holders with respect to a registration and the indemnification of the Issuer to the extent provided therein.

22. Governing Law

This Note shall be governed by, and construed in accordance with, the laws of the state of New York.

The Issuer will furnish to any Noteholder upon written request and without charge to the Noteholder a copy of the Indenture which has in it the text of this Note in larger type. Requests may be made to:

Momentive Specialty Chemicals Inc.

180 East Broad St.

Columbus, OH 43215

Attention: General Counsel

ASSIGNMENT FORM

To assign this Note, fill in the form below:

I or we assign and transfer this Note to

(Print or type assignee’s name, address and zip code)

(Insert assignee’s soc. sec. or tax I.D. No.)

and irrevocably appoint              agent to transfer this Note on the books of the Issuer. The agent may substitute another to act for him.

Sign exactly as your name appears on the other side of this Note.

In connection with any transfer of any of the Notes evidenced by this certificate occurring prior to the expiration of the applicable holding period referred to in Rule 144(d) under the Securities Act after the later of the date of original issuance of such Notes and the last date, if any, on which such Notes were owned by the Issuer or any Affiliate of the Issuer, the undersigned confirms that such Notes are being transferred in accordance with its terms:

CHECK ONE BOX BELOW

Unless one of the boxes is checked, the Trustee will refuse to register any of the Notes evidenced by this certificate in the name of any person other than the registered holder thereof; provided, however, that if box (3), (4) or (5) is checked, the Trustee shall be entitled to require, prior to registering any such transfer of the Notes, such legal opinions, certifications and other information as the Issuer has reasonably requested to confirm that such transfer is being made pursuant to an exemption from, or in a transaction not subject to, the registration requirements of the Securities Act of 1933, such as the exemption provided by Rule 144 under such Act.

Signature Guarantee:

Signatures must be guaranteed by an “eligible guarantor institution” meeting the requirements of the Registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program (“STAMP”) or such other “signature guarantee program” as may be determined by the Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended.

TO BE COMPLETED BY PURCHASER IF (2) ABOVE IS CHECKED.

The undersigned represents and warrants that it is purchasing this Note for its own account or an account with respect to which it exercises sole investment discretion and that it and any such account is a “qualified institutional buyer” within the meaning of Rule 144A under the Securities Act of 1933, and is aware that the sale to it is being made in reliance on Rule 144A and acknowledges that it has received such information regarding the Issuer as the undersigned has requested pursuant to Rule 144A or has determined not to request such information and that it is aware that the transferor is relying upon the undersigned’s foregoing representations in order to claim the exemption from registration provided by Rule 144A.

[TO BE ATTACHED TO GLOBAL NOTES]

SCHEDULE OF INCREASES OR DECREASES IN GLOBAL NOTE

The following increases or decreases in this Global Note have been made:

OPTION OF HOLDER TO ELECT PURCHASE

If you want to elect to have this Note purchased by the Issuer pursuant to Section 4.06 or 4.08 of the Indenture, check the box:

If you want to elect to have only part of this Note purchased by the Issuer pursuant to Section 4.06 or 4.08 of the Indenture, state the amount in principal amount: $                    

Signatures must be guaranteed by an “eligible guarantor institution” meeting the requirements of the Registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program (“STAMP”) or such other “signature guarantee program” as may be determined by the Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended.