| 摘要 |
PURPOSE:To provide a high sensitivity to visible ray and more particularly long-wavelength ray by incorporating a specific sensitizer and activators which can generate active radicals at the time of photoirradiation in the co-presence with the sensitizer to the photopolymn. initiator. CONSTITUTION:The photopolymn. initiator of the photopolymerizable compsn. contg. an addition polymerizable compd. having at least one piece of ethylenic unsatd. double bonds and a photopolymn. initiator contains the sensitizer expressed by formula I or II and at least one kind of the activators which can generate the active radicals at the time of the photoirradiation in the co- presence with the sensitizer. In the formula I, R<1> to R<3> denote a hydrogen atom, alkyl group, etc.; R<1> and R<2> may form a ring structure by bonding to each other; R<4>, R<5> respectively denote a hydrogen atom, halogen atom, etc.; R<4>, R<5> are not simultaneously the hydrogen atom; n denotes 0 or 1. In the formula II, R<6> to R<8> denote a hydrogen atom, alkyl group, etc.; R<6> and R<7> may form a ring structure by bonding to each other; R<9> to R<11> respectively denote an alkoxy group; m denotes 0 or 1. |
