| 摘要 |
PROBLEM TO BE SOLVED: To obtain a compsn. having high sensitivity to light in the region of 630-1,100nm and capable of cationic photopolymn. by incorporating a specified sensitizing dye and an s-triazine compd. into a photopolymn. initiating system. SOLUTION: This compsn. having high sensitivity to light in the region of 630-1,100nm and capable of cationic photopolymn. contains a compd. having at least two vinyloxy groups and a photopolymn. initiating system which is activated by irradiation with light of 630-1,100nm and contains a sensitizing dye having absorption in the region of 630-1,100nm and an s-triazine compd. having at least one methyl halide group. The compd. having at least two vinyloxy groups is brought into cationic polymn. by an acid produced from the photopolymn. initiating system by irradiation with light. |
