Patent ID: 6933095
Filing Date: 2005-08-23
Classification: C08F,G03F,Y10S

Abstract:
1. A polymer comprising recurring units of the following general formulae (1a), (1b) and (1c) and having a weight average molecular weight of 1,000 to 500,000, wherein R 1 , R 2 , R 5 to R 7 and R 10 to R 12 each are hydrogen, a fluorine atom or a straight, branched or cyclic alkyl or fluorinated alkyl group of 1 to 20 carbon atoms, R R R R R a, b and c are numbers in the range: 0<a<1, 0<b<1, 0<c<1, and 0<a+b+c≦1, d is an integer of 1 to 4, e is the integer 1 or 2, and f is an integer of 0 to 4, and 1≦e+f≦5.