abstract |
Conventionally known compounds are not sufficiently satisfactory in resistance to N-methylpyrrolidone (NMP). Therefore, even when preparing a colored curable composition containing the compound, sufficient resistance to NMP is obtained. It was not satisfactory. A compound of the present invention is a polymer having a structural unit derived from (a) a cation represented by the formula (AI) and (b) an anion represented by the formula (A-II). Consists of. [Selection figure] None |