Adhesion promoters

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C - Chemistry, Metallurgy

07

F

402/138, 260/251

C07F 7/10 (2006.01) C07F 7/18 (2006.01) C08G 18/83 (2006.01) C08K 5/5465 (2006.01) C09D 175/04 (2006.01) C09J 175/04 (2006.01)

Patent

CA 2018665

Compounds of general formula I (see formula I) wherein R1 is C2-C3alkylene, R2 is hydrogen, unsubstituted C1-C6alkyl or C1-C6alkyl substituted by -OH, -CN or by -Si(OR3)3-q R4q, or C2-C6alkenyl, R3 is C1-C4alkyl, or two radicals R3 together are C1-C4alkylene, R4 is C1-C4alkyl or phenyl, and q is from 0 to 2, and E is a radical of the formula (see formula II) wherein R5 is hydrogen or C1-C4alkyl and R6 is hydrogen, or R5 and R6 together are C4-C8alkylene, or E together with R2 is a radical of the formula (see formula III), wherein R7 is hydrogen, C1-C4alkyl or -R9-Si(OR3)3-q R4n, wherein R3, R4 and q are as defined above and R9 is C1-C8alkylene, and R8 is a radical Image R10 is hydrogen or C1-C4alkyl and R11 is hydrogen, or R10 and R11 together are C4-C8alkylene, and A is ~(CH2)r-O~, wherein r is 1, 2 or 3, and p is 0 or 1, and Y is oxygen or sulfur; and wherein T is a radical -R9-Si(OR3)3-q R4q, a radical of the formula Image or, when R~ is a radical of the formula -R~-Si(OR3)3_qRn~ and m is >_ 2, T is an m-valent radical Z, wherein R3, R't, R9, Y and d are as defined above, X is -S- or -NI-I-, and Z is an cxganic radical derived from a polyisocyanate or polyisothiocyanate having at least 2 NCO or NCS groups, respectively, and m is >_ 1, and nis>_1, are suitable as adhesion promoters, especially for moisture-curing polyurethane resins.

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