Patent ID: 8784555

Claim:
A surface active adhesion promoting agent comprising at least a blocked isocyanate and a siloxane portion having at least two or more silicon atoms and a number average molecular weight in the range of from 500 to 4500, wherein said surface active adhesion promoting agent is of the formula; A-Si(X) 3-q R q wherein q is 0, 1 or 2; A is G-C(O)NH—R 1 and is attached to the silicon atom through R 1 ; G is the residue of an isocyanate blocking agent; each X is independently chosen from the group consisting of OR 2 , OY, OSi(X′) 2 A or a hydrolysable group; wherein at least one of X is OY or OSi(X′) 2 A; Y is Si(Z) 3-w (R 3 ) w or Si(X′) 2 A; each X′ is independently chosen from the group consisting of OR 2 , OY or a hydrolysable group; each Z is independently chosen from the group consisting of OR 4 , OSi(X′) 2 A, OY, hydrolysable group or a silsesquioxane; R 1 is a divalent organic radical consisting of an alkyl group having from 3 to 4 carbon atoms; each R, R 2 , R 3 or R 4 is independently chosen from the group consisting of C1 to C8 aliphatic group, C3 to C20 cycloaliphatic, alkylcycloaliphatic, cycloaliphaticalkyl group, C6 to C20 aryl group or a fluorine containing or perfluoro derivative thereof; w is 0, 1 or 2; and wherein A-Si(X) 3-q R q has a molecular weight in the range of from 500 to 4500.