| abstract |
A salt represented by formula (I): n nwherein Q 1 and Q 2 each independently represent a fluorine atom or a C1-C6 perfluoroalkyl group,n A 1 represents a C1-C30 monovalent organic group, X 1 represents a C1-C10 aliphatic hydrocarbon group where a hydrogen atom may be replaced by a hydroxy group, m 1 and m 2 independently each represent an integer of 1 to 4, and Z + represents an organic cation. |