| 摘要 |
PURPOSE:To make a drying stage unnecessary by incorporating a specified polyvinyl alcohol copolymer, a polymerizable monomer having a radical- polymerizable ethylenic double bond and a photopolymn. initiator. CONSTITUTION:This photosensitive resin compsn. contains a water soluble or water dispersible polyvinyl alcohol copolymer having 50-70mol.% degree of saponification of vinyl ester units and 60-130 deg.C heat melting and flowing start temp., a polymerizable monomer having a radical-polymerizable ethylenic double bond and a photopolymn. initiator. The polyvinyl alcohol copolymer is obtd. by saponifying a copolymer consisting of 0.1-20mol.% in total of 0.1-20mol.% nonionic monomer radical-copolymerizable with vinyl ester and 0-10mol.% monomer having an ionic hydrophilic group and the balance vinyl ester. When the photosensitive resin compsn. is used, a drying stage is made unnecessary, a large-scale apparatus is not required and the number of stages can be reduced. |
