UNITED STATES

OMB APPROVAL

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 144/A

OMB Number: 3235-0101

Expires: December 31, 2006

Estimated average burden

hours per response . . . . 4.47

NOTICE OF PROPOSED SALE OF SECURITIES

SEC USE ONLY

PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933

DOCUMENT SEQUENCE NO.

ATTENTION: Transmit for filing 3 copies of this form concurrently with either placing an order with a broker to execute sale or executing a sale

directly with a market maker.

CUSIP NUMBER

1 (a) NAME OF ISSUER (Please type or print)

Cytec Industries Inc.

(b) IRS IDENT. NO.
22-3268660

(c) S.E.C. FILE NO.

000-0912-513

WORK LOCATION

1 (d) ADDRESS OF ISSUER          STREET                                                                                    CITY                                                        STATE                      ZIP CODE

(e) TELEPHONE NO.

Five Garret Mountain Plaza                  Water Paterson                             NJ                   07424

(973) 357-3100

2 (a) NAME OF PERSON FOR WHOSE ACCOUNT THE SECURITIES

ARE TO BE SOLD

UCB S.A.

(b) SOCIAL SECURITY NO. OR IRS IDENT. NO

N/A

(c) RELATIONSHIP TO ISSUER

10% Stockholder

(d) ADDRESS               STREET                                    CITY                STATE            ZIP CODE

     Allee de la Recherche 60                        Brussels                Belgium    1070

3 (a)

SEC USE ONLY

(c)

(d)

(e)

(f)

(g)

Title of the

Class of

Securities

To Be Sold

Name and Address of Each Broker Through Whom the

Securities are to be Offered or Each Market Maker

who is Acquiring the Securities

Broker-Dealer

File Number

Number of Shares

or Other Units

To Be Sold

(See instr. 3(c))

Aggregate

Market

Value

(See instr. 3(d))

Number of Shares

or Other Units

Outstanding

(See Instr. 3(e))

Approximate

Date of Sale

(See instr. 3(f))

(MO. DAY YR.)

Name of Each

Securities

Exchange

(See instr. 3(g))

common stock, par value $0.01 per share

Bear, Stearns & Co. Inc.

383 Madison Avenue

New York, NY 10179

762,925

$42,225,075.93*

47,189,172

10-17-2006*

NYSE

common stock, par value $0.01 per share

Bear, Stearns & Co. Inc.

383 Madison Avenue

New York, NY 10179

199,218

$11,068,552.08

47,189,172

10-31-2006

NYSE

1. (a) Name of issue

(b) Issuer's I.R.S. Identification Number

(c) Issuer's S.E.C. file number, if any

(d) Issuer's address, including zip code

(e) Issuer's telephone number, including area code

2. (a) Name of person for whose account the securities are to be sold

(b) Such person's Social Security of I.R.S. identification number

(c) Such person's relationship to the issuer (e.g., officer, director, 10% stockholder, or

member of immediate family of any of the foregoing)

(d) Such person's address, including zip code

3. (a) Title of the class of securities to be sold

(b) Name and address of each broker through whom the securities are intended to be sold

(c) Number of shares or other units to be sold (if debt securities, give the aggregate face amount)

(d) Aggregate market value of the securities to be sold as of a specified date within 10 days prior to the filing of

this notice

(e) Number of shares or other units of the class outstanding, or if debt securities the face amount thereof

outstanding, as shown by the most recent report or statement published by the issuer

(f) Approximate date on which the securities are to be sold

(g) Name of each securities exchange, if any, on which the securities are intended to be sold

Title of

the Class

Date You

Acquired

Nature of Acquisition Transaction

Name of Person from Whom Acquired

(If gift, also give date donor acquired)

Amount of

Securities Acquired

Date of

Payment

Nature of Payment

Common Stock, par value $0.01 per share

02/28/

2005

These shares were acquired in connection with Cytec Industries Inc.’s acquisition of certain business from UCB S.A.

Cytec Industries Inc.

5,772,857

02/28/

2005

Acquisition of business

INSTRUCTIONS: 1.

If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

2.

If within two years after the acquisition of the securities the person for whose account they are to be sold had any short positions, put or other options to dispose of securities referred to in paragraph (d)(3) of Rule 144, furnish full information with respect thereto.

Name and Address of Seller

Title of Securities Sold

Date of Sale

Amount of

Securities Sold

Gross Proceeds

INSTRUCTIONS:

ATTENTION:

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed.

October 31, 2006

________________________________________________________________________________

DATE OF NOTICE

/s/ Luc Missorten__________________________________________________________

             Luc Missorten      (SIGNATURE)          Executive Vice President & Chief Financial Officer