申请人:ICHIKAWA Koji
公开号:US20110200936A1
公开(公告)日:2011-08-18
A salt represented by the formula (I):
wherein R
1
and R
2
each independently represent a fluorine atom or a C1-C6 perfluoroalkyl group, X
1
represents a C1-C17 divalent saturated hydrocarbon group which can have one or more fluorine atoms and in which one or more —CH
2
— can be replaced by —O— or —CO—, R
3
represents a group having a cyclic ether structure, and Z
1+
represents an organic cation.