Patent ID: 6919161

Claim:
A silicon-containing polymer comprising recurring units of the general formula (1): wherein R 1 is a single bond or a straight, branched or cyclic alkylene group of 1 to 10 carbon atoms, R 2 is hydrogen or a straight, branched or cyclic alkyl group of 1 to 10 carbon atoms, R 3 , R 4 and R 5 are each independently an alkyl or haloalkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms or a silicon-containing group which forms a siloxane or silalkylene linkage to the silicon atom in the formula, R 6 is hydrogen, methyl, cyano or —C(═O)OR 8 , R 8 is hydrogen, a straight, branched or cyclic alkyl group of 1 to 10 carbon atoms or an acid labile group, R 7 is a straight, branched or cyclic alkyl group of 1 to 10 carbon atoms, —NR 9 R 10 or —OR 11 , R 9 and R 10 are each independently hydrogen or a straight, branched or cyclic alkyl group of 1 to 10 carbon atoms, R 11 is a straight, branched or cyclic alkyl group of 1 to 10 carbon atoms, and a and b are positive numbers satisfying 0<a+b≦1.