| abstract |
(57) [Summary] [Object] To provide a polymerization initiator for a novel pyrazinium salt compound. [Structure] Formula 1 Pyrazinium salt compound and its polymerization initiator. [Chemical 1] [In the formula, R 1 represents an alkyl group substituted with an aromatic ring or an alkenyl group optionally substituted with an aromatic ring, R 2 , R 3 , R 4 and R 5 each represent a hydrogen atom, an alkyl group, a halogen atom, a nitro group, a cyano group, an alkoxy group, a phenyl group or an alkoxycarbonyl group, and R 2 and R 3 and R 4 and R 5 may be fused together to form an aromatic ring, and X is SbF 6 , As. Representing F 6 , PF 6 or BF 4 ] [Effect] The polymerization initiator of the present invention is effective as a polymerization initiator for a compound produced by cationic polymerization and can be extremely rapidly polymerized and cured by heat treatment. |