| abstract |
A sulfonium salt which does not contain a toxic metal and has cationic polymerization performance and crosslinking reaction performance higher than or equal to tetrakis(pentafluorophenyl)borate salt, a heat or photoacid generator comprising the sulfonium salt, and a heat or photoacid generator using the same In the cured product, in particular, since strong acid does not remain after the heat resistance test, there is no corrosion of the member, and there is no problem in that transparency is lowered due to deterioration of the resin. to provide. The present invention relates to 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); A heat or photo-acid generator comprising an nium salt, a heat- or energy-beam curable composition comprising the acid generator and a cationically polymerizable compound, and a cured product obtained by curing them. |