| 摘要 |
PROBLEM TO BE SOLVED: To provide a compound useful as a water soluble photopolymerization initiator, and an ink composition containing the same.SOLUTION: A compound is represented by general formula (1) [in general formula (1), each of Rto Rindependently represents a hydrogen atom or a substituent, however, at least one of Rto Ris a group represented by R-X-* (wherein Xrepresents an oxygen atom or a sulfur atom, Rrepresents a substituent, and * represents a site connecting with a benzene ring), also Rrepresents a substituent other than an aryl group and a heterocyclic group, and two or more Rs may be identical to or different from one another]. |
