CATIONICALLY PHOTOPOLYMERIZABLE SILICA FINE PARTICLE, ITS PRODUCTION AND CATIONICALLY PHOTOCURABLE RESIN COMPOSITION

摘要

PROBLEM TO BE SOLVED: To obtain cationically photopolymerizable silica fine particles, to provide their production and to obtain a cationically photocurable resin component useful as a hard coating agent. ;SOLUTION: The cationically/photopolymerizable silica fine particles comprise an oxetanyl group-containing organic functional group chemically bonded to the surface of particles and are produced by reacting a silane compound of the formula; R⁰Si (OR³)₃ (R⁰ is an oxetanyl group-containing organic functional group; R³ is an alkyl group, a cycloalkyl group or an aryl group) with silica fine particles. This cationically photocurable resin composition comprises cationicals photopolymerizable silica fine particles (a), a photopolymerizable compound (b) except the component (a) and a cationic photopolymerization initiator (c). The composition can be cured rapidly in air without requiring high-temperature heating.;COPYRIGHT: (C)1999,JPO