Patent ID: 6369186
Filing Date: 2002-04-09
Classification: C08G,C08J,C09D

Abstract:
A crosslinkable composition comprising:(a) 20 to 50 weight % of polyisocyanate, (b) 50 to 80 weight % of acrylic oligomer comprising hydroxyl groups, the content by weight of which with respect to the acrylic oligomer is from 0.1 to 10%, (c) 1 to 10 weight % of a silicone oil of formula (I): â€ƒwherein: (1) o and p are identical or different integers from 1 to 100, (2) 1 represents an integer such that 1=2+q, (3) q represents an integer from 0 to 10, (4) m represents an integer from 1 to 60, (5) n is an integer such that 20(6) the symbols R1 and R2 are identical or different and represent a hydrocarbon-comprising radical selected from the group consisting of linear or branched alkyl radicals having from 1 to 4 carbon atoms, linear or branched alkoxy radicals having from 1 to 4 carbon atoms, aryl radicals and alkylaryl radicals, (7) the symbols R3 and R4 are identical or different are: monovalent â€”(CH2)hâ€”Siâ€”(R1)3 radicals, wherein h is an integer from 1 to 10, or monovalent aromatic alkylaryl radicals, the linear or branched alkyl part comprising 1 to 4 carbon atoms, (8) the symbols R5 and R6 are identical or different and represent a monovalent functional group selected from the group consisting of: a monovalent primary amine of formula â€”R7â€”NH2, wherein R7 is a linear, branched or cyclic alkyl radical having from 1 to 6 carbon atoms, a monovalent secondary amine of formula: â€”R8â€”NHâ€”R9 wherein R8 and R9, which are identical or different, are linear, branched or cyclic alkyl chains having from 1 to 6 carbon atoms, a monovalent â€”(CH2)a(NHCH2CH2)bNH2 radical wherein a and b are independent integers: a is from 1 to 10, b is from 1 to 10, a monovalent â€”(CH2)c(OCH2CH2)d(OCH2CHCH3)eOH radical wherein c, d and e are independent integers: c is from 1 to 20, d is from 0 to 70, e is from 0 to 70, a monovalent â€”(CH2)fSH radical wherein f is an integer ranging from 1 to 10, and a monovalent â€”(CH2)gâ€”C(Râ€²)2â€”OH radical wherein g is an integer ranging from 1 to 10, and Râ€² represents a hydrocarbon-comprising radical selected from the group consisting of a linear alkyl radical having from 1 to 4 carbon atoms, a branched alkyl radical having from 1 to 4 carbon atoms, aryl radicals and alkylaryl radicals.