| abstract |
A photocurable composition which can be produced andncured while utilizing two different polymerization modes,ncan be used for bonding over a sufficiently long timenperiod, and has excellent peel strength. n The composition comprises (A) a compound containing anpolymerizable unsaturated bond and giving a homopolymernhaving a glass transition temperature of 0 to 100°C, (B) ancompound which has an unsaturated bond and isncopolymerizable with the compound (A), (C) a compound havingnat least one cationically polymerizable group per molecule,n(D) a polymerization catalyst which upon irradiation withnlight initiates the polymerization of the compounds (A) andn(B), and (E) a cationic polymerization catalyst which uponnirradiation with light initiates the cationic polymerizationnof the compound (C) at the cationically polymerizablengroup(s). |