Patent ID: 6780563
Filing Date: 2004-08-24
Classification: G03F

Abstract:
A polymer having silicon-containing groups of formula (1): whereinone of R1 and R2 is a cyclic alkyl group of 1 to 20 carbon atoms and the other is hydrogen or a straight, branched or cyclic alkyl group of 1 to 20 carbon atoms, or R1 and R2, taken together, may form an aliphatic hydrocarbon ring in which â€”CH2â€” may be substituted with a â€”Si(R8)2â€” group, and R3 and R4 each are independently hydrogen or a straight, branched or cyclic alkyl group of 1 to 20 carbon atom, or R3 and R4, taken together, may form an aliphatic hydrocarbon ring in which â€”CH2â€” may be substituted with a â€”Si(R8)2â€” group, R5 to R7 each are independently a straight, branched or cyclic alkyl or fluorinated alkyl group of 1 to 20 carbon atoms or aryl group of 6 to 20 carbon atoms, R8 is independently a straight or branched alkyl group of 1 to 4 carbon atoms, and m is 1 or 2.