| 摘要 |
PURPOSE:To improve printing resistance by compounding a photocrosslinking agent selected from a copolymer emulsion, polyvinyl alcohol (PVA), a group consisting of dichromate and diazo resin, a specific mixture, and a photoinitiator. CONSTITUTION:The photoinitiator is added to 5 to 94.9wt.% (solid content) copolymer emulsion formed by polymerizing 2 to 99.5wt.% ester monomer of 1 to 24C satd. fatty acid and vinyl alcohol and 0.5 to 98wt.% bismethane expressed by formula I, to fully or partial saponified PVA, 1 to 20wt.% PVA, 0.1-5wt.% photocrosslinking agent selected from the group consisting of the dichromate and diazo resin, and 0 to 93.9wt.% bismetane expressed by the formula I or the mixture composed of this bismethane and water insoluble or hardly soluble compd. having 1 or >=2 after optical active ethylenic unsatd. group. The sufficient printing resistance is obtd. in this way. |
