Patent ID: 9162967
Filing Date: 2015-10-20
Classification: C07C,G03F

Abstract:
1. A sulfonium salt comprising (a) a polymerizable substituent, (b) a sulfonium cation, and (c) a sulfonate anion within a common molecule, capable of generating a sulfonic acid in response to high-energy radiation or heat, wherein the sulfonium salt has a structure of general formula (1A), (1B) or (1C): wherein R 0 is a C 1 -C 20 monovalent hydrocarbon group which may be substituted with or separated by a heteroatom, R 1 is hydrogen, methyl or trifluoromethyl, L 1 , L 2 and L 3 are each independently a single bond or a C 1 -C 20 straight, branched or cyclic, divalent hydrocarbon group which may be substituted with or separated by a heteroatom, X is a C 1 -C 5 divalent alkylene group in which some or all hydrogen atoms may be substituted by fluorine atoms, W is a C 3 -C 30 trivalent aliphatic or aromatic ring, n is 0 or 1, p is an integer of 0 to 5, q is an integer of 0 to 4, and r is an integer of 0 to 3.