| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain an active-energy-ray-curable compsn. which is excellent in curability and gives a cured item excellent in physical properties by incorporating a cationically polymerizable substance, a sulfonium salt having a benzophenone structure and/or a thioxanthone structure as a cationic photopolymn. initiator, and a sensitizer into the same. SOLUTION: This compsn. contains a cationically polymerizable substance such as an epoxy compd., a vinyl compd., a dicycloorthoester compd., a spiroorthocarbonate compd., or a compd. having an oxetane ring (e.g. 3,4- epoxycyclohexylmethyl 3,4-epoxycycolhexanecarboxylate), a sulfonium salt having a benzophenone structure and/or a thioxanthone structure (e.g. 4- diphenylsulfonio-4'-phenylcarbonyldiphenyl sulfide hexafluorophosphate) as a cationic photopolymn. initiator, and a sensitizer (e.g. 2-ethyl-9,10- dimethoxyanthracene).</p> |
