Patent ID: 6869748
Filing Date: 2005-03-22
Classification: G03F,Y10S

Abstract:
1. A resist composition comprising a polymer comprising recurring units of the following general formula (1) and recurring units of the following general formula (3) and having a weight average molecular weight of 1,000 to 500,000, wherein R 1 and R 2 are each independently hydrogen, hydroxy, a straight or branched alkyl group, halogen atom or trifluoromethyl group, R 3 is methyl or ethyl, R 4 and R 5 each are an alkyl group having 1 to 7 carbon atoms, or R 4 and R 5 may bond together to form a cyclic structure, t is a positive number, wherein R 6 , R 7 , R 9 , R 10 and R 11 are each independently hydrogen, hydroxy, a straight or branched alkyl group, halogen atom or trifluoromethyl group, R 8 is an alkyl group having 1 to 10 carbon atoms, R 12 is an alkyl group having 4 to 30 carbon atoms or silicon-substituted alkyl group, q, r and s are 0 or positive numbers, and p is a positive number.