| 摘要 |
PURPOSE:To obtain a higher sensitivity by incorporating an linear org. high- molecular polymer having a group from which hydrogen is easily withdrawn by a sulfur radical in the molecule and a specific thio compd. into the above compsn. CONSTITUTION:This compsn. contains a polymerizable compd. having an addition-polymerizable unsatd. bond, the linear org. high-molecular polymer having the group from which the hydrogen is easily withdrawn by the sulfur radical, the thio compd. expressed by formula and a photopolymn. initiator. In the formula, R<1> denotes an alkyl group, aryl group or substd. aryl group; R<2> denotes a hydrogen atom or alkyl group or the nonmetal atom group necessary for forming 5-to 7-membered rings which may include the hetero atom selected from oxygen, sulfur and nitrogen atom by bonding to R<1> and R<2> to each other. The polymerizable compd. having the addition-polymerizable unsatd. bond is selected from the compds. having at least one piece, more preferably >=2 pieces of terminal ethylenic unsatd. bonds. |
