| 摘要 |
PROBLEM TO BE SOLVED: To obtain a composition which is able to provide a cured product having good physical properties through light irradiation, by compounding dimethylphenacylsulfonium tetraphenylborate, a radical-polymerizable compound, and a carboxyl group-containing polymer. SOLUTION: It is preferred that the dimethylphenacylsulfonium tetraphenylborate is compounded in an amount of 0.1 to 20 pts.wt. per 100 pts.wt. of the radical polymerizable-compound, and the carboxyl group-containing polymer is compounded in an amount of 0.3 to 5 pts.wt. per unit pt.wt. of the radical-polymerizable compound. Moreover, a sensitizer and other type of polymerization initiator may be used in combination, and are, respectively, compounded in an mount of 0.01 to 10 pts.wt. per 100 pts.wt. of the radical- polymerizable compound. As the sensitizer, there may be particularly mentioned 4,4'-bis(diethylamino)benzophenone, 2,4-diethylthioxanthone, 2- isopropylthioxanthone, and 4-isopropylthioxanthone. |
