sulfoniumverbindungen and sulfoniumverbindungen as main component containing polymerisierungsinitiatoren.

摘要

Sulfonium compounds represented by the formulae (I) or (II) : where R₁ represents ethoxy group, phenyl group, benzyloxy group, chloromethyl group, phenoxy group, 9-fluorenylmethoxy group or trichloromethyl group, R₂ and R₃ represent, independently, hydrogen, halogen or alkyl group, R₄ represents hydrogen or methoxy group, R₅ represents alkyl group, R₆ represents hydrogen, methyl group, acetyl group, methoxy carbonyl group, ethoxy carbonyl group, chloroacetyl group, trichloroacetyl group, benzyloxy carbonyl group, benzoyl group, phenoxy carbonyl group or 9-fluorenyl methoxy carbonyl group, Q represents chlorobenzyl group, methyl benzyl group, nitrobenzyl group, dinitrobenzyl group, α-naphthylmethyl group or β-naphthylmethyl group and X represents SbF₆, PF₆, AsF₆ or BF₄, providing that if R₆ is hydrogen, methyl group, acetyl group or methoxy­carbonyl group, Q does not include chlorobenzyl group or methylbenzyl group, are used as polymerisation initiators.