Patent ID: 7078147
Filing Date: 2006-07-18
Classification: C08F,G03F,Y10S

Abstract:
1. A polymer comprising recurring units of the following general formula (2a) or (2b) and having a weight average molecular weight of 1,000 to 500,000, wherein R 6 is a methylene group, oxygen atom, sulfur atom or SO 2 , R 7 to R 10 each are hydrogen, fluorine, a straight, branched or cyclic alkyl or fluorinated alkyl group of 1 to 20 carbon atoms or —R 11 —SO 2 R 12 , at least one of R 7 to R 10 containing —R 11 —SO 2 R 12 , R 11 is a valence bond or a straight, branched or cyclic alkylene or fluorinated alkylene group of 1 to 20 carbon atoms, R 12 is fluorine or a straight, branched or cyclic alkyl group of 1 to 20 carbon atoms which does not contain a hetero atom, a1 is 0 or 1, and a2 is an integer of 0 to 2.