Patent ID: 8617787

Claim:
A sulfonium salt represented by formula (1) described below: wherein in formula (1), R 1 , R 2 , R 3 , R 5 and R 6 each independently represent an alkyl group, a hydroxy group, an alkoxy group, an alkylcarbonyl group, an arylcarbonyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an arylthiocarbonyl group, an acyloxy group, an arylthio group, an alkylthio group, an aryl group, a heterocyclic hydrocarbon group, an aryloxy group, an alkylsulfinyl group, an arylsulfinyl group, an alkylsulfonyl group, an arylsulfonyl group, a hydroxy(poly)alkyleneoxy group, an optionally substituted amino group, a cyano group, a nitro group, or a halogen atom, R 4 represents an alkyl group, a hydroxy group, an alkoxy group, an alkylcarbonyl group, an alkoxycarbonyl group, an acyloxy group, an alkylthio group, a heterocyclic hydrocarbon group, an an alkylsulfinyl group, an alkylsulfonyl group, a hydroxy(poly)alkyleneoxy group, an optionally substituted amino group, a cyano group, a nitro group, or a halogen atom, m 1 to m 6 each represent the number of occurrences of each of R 1 to R 6 , m 1 , m 4 , and m 6 each represent an integer of 0 to 5, m 2 , m 3 , and m 5 each represent an integer of 0 to 4, and X âˆ’ represents a monovalent polyatomic anion.