| abstract |
A sulfonium salt containing no toxic metal and having cationic polymerization performance or crosslinking reaction performance higher than that of a tetrakis (pentafluorophenyl) borate salt, a heat or photo acid generator characterized by containing the sulfonium salt, and the same The cured product used in particular has no strong acid remaining after the heat resistance test, so there is no corrosion of the member, and energy ray curability using a cationic polymerization initiator (acid generator) which has no problem that the transparency is reduced due to deterioration of the resin. Provided are a composition and a cured product. The present invention provides a sulfonium salt comprising a sulfonium cation selected from the group represented by the following general formulas (1), (9), (10) and (11) and a gallate anion represented by the formula (a) It is a heat or photo acid generator characterized by containing, a heat or energy ray curable composition comprising the acid generator and a cationically polymerizable compound, and a cured product obtained by curing the same. |