Patent ID: 7232638
Filing Date: 2007-06-19
Classification: G03F

Abstract:
1. A resist composition comprising as a base resin a polymer obtained by copolymerization of a silicon-containing monomer with a polar monomer having a LogP or cLogP value of up to 0.6 and having a structure of the general formula (1) or (2): wherein R 1 which may be the same or different is hydrogen, methyl or cyano group, R 2 is hydrogen, methyl or cyano group, R 3 is hydrogen or ester group, R 4 and R 5 each are hydrogen, ester group or lactone ring-containing group, or R 4 and R 5 , taken together, may form a ring with the carbon atoms to which they are attached, which ring may contain an ether, ester, carbonate or carboxylic anhydride as a partial structure.