초록 ▼

Novel photopolymerizable compositions are provided which comprise a dye sensitizer, a linear polyethylenimine as a polymerization initiator and a free radical polymerizable ethylenic unsaturated monomer. In the preferred embodiments, the linear polyethylenimine is used in combination with lithium ac

Novel photopolymerizable compositions are provided which comprise a dye sensitizer, a linear polyethylenimine as a polymerization initiator and a free radical polymerizable ethylenic unsaturated monomer. In the preferred embodiments, the linear polyethylenimine is used in combination with lithium acrylate.

대표청구항 ▼

The method of forming a photopolymer image which comprises imagewise exposing a photopolymerizable alkaline composition comprising an ethylenic unsaturated monomer, a dye sensitizer and a linear polyethylenimine to light absorbed by said dye sensitizer, said dye sensitizer and said linear polyethyle

The method of forming a photopolymer image which comprises imagewise exposing a photopolymerizable alkaline composition comprising an ethylenic unsaturated monomer, a dye sensitizer and a linear polyethylenimine to light absorbed by said dye sensitizer, said dye sensitizer and said linear polyethylenimine providing a photopolymerization system, thereby affecting imagewise photopolymerization of said monomer. The method of claim 14 wherein said ethylenic unsaturated monomer is a monovalent salt of acrylic acid. The method of claim 16 wherein said ethylenic unsaturated monomer is lithium acrylate. The method of claim 17 wherein said photopolymerizable composition includes poly-N-vinyl pyrrolidone. The method of claim 18 wherein said photopolymerizable composition is a coated layer on a support.