Patent ID: 6790591
Filing Date: 2004-09-14
Classification: G03F,Y10S

Abstract:
A polymer comprising recurring units of the following general formulae (1a) and (1b) and having a weight average molecular weight of 1,000 to 500,000, wherein R1 is fluorine or a straight, branched or cyclic alkyl or fluorinated alkyl group of 1 to 20 carbon atoms, R2a and R2b each are hydrogen or â€”R3â€”CO2R4, at least one of R2a and R2b contains â€”R3â€”CO2R4, R3 is a straight, branched or cyclic alkylene or fluorinated alkylene group of 1 to 10 carbon atoms, and R4 is hydrogen, an acid labile group, an adhesive group or a straight, branched or cyclic alkyl or fluorinated alkyl group of 1 to 20 carbon atoms.