Patent ID: 9604921
Date: 2017-03-28
CPC Classifications: C07C,C07D,G03F

Claim:
1. A resist composition comprising: a sulfonium salt having the general formula (1): wherein R 01 is a C 3 -C 20 branched or cyclic monovalent hydrocarbon group which may be substituted with or separated by a heteroatom, m is an integer of 0 to 2, k is an integer satisfying 1≦k≦5+4m, R L is an ester, sulfonic acid ester, carbonate or carbamate bond, R n is an integer of 0 to 2, and p is an integer satisfying 0≦p≦4+4n; and a polymer comprising recurring units having the general formula (U-1): wherein q is 0 or 1, r is an integer of 0 to 2, R wherein the polymer further comprises recurring units having the general formula (U-3) and/or (U-4): wherein f is an integer of 0 to 6, R 3 is each independently hydrogen, or a C 1 -C 6 alkyl, primary or secondary alkoxy, or C 1 -C 7 alkylcarbonyloxy group which may be substituted with halogen, g is an integer of 0 to 4, and R 4 is each independently hydrogen, or a C 1 -C 6 alkyl, primary or secondary alkoxy, or C 1 -C 7 alkylcarbonyloxy group which may be substituted with halogen.