New benjirupirijiniumu salt

摘要

NEW MATERIAL:A benzylpyridinum salt shown by formula I (R1, R2 and R3 are H, halogen, alkyl, alkoxy, nitro, amino or hydroxy; R4 is H, alkyl, cyano, alkoxycarbonyl or carbamoyl with the proviso that when R1, R2 and R3 are simultaneously H, cyano group at the 4-position does not mean; M is As, Sb, B or P; X is halogen; n is 4 when M is B and n is 6 when M is not B). EXAMPLE:1-(4-Methoxybenzyl)-4-cyanopyridinum hexafluoroantimonate. USE:Useful as a thermally latent cationic polymerization initiator. Suitable for uses utilizing thermally latent properties such as a curing agent for epoxy resin of one-pack type. PREPARATION:A pyridine shown by formula II is quaternized with a substituted benzyl halide shown by formula III and a halide anion of formed pyridinum halide is replaced with MXn- ion to give a compound shown by formula I.