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    • 2. 发明授权
    • Photopolymerizable composition for the production of printing plates and
relief plates, and the elements produced therewith
    • 用于生产印版和浮雕版的光聚合组合物,以及由其生产的元素
    • US4272611A
    • 1981-06-09
    • US86719
    • 1979-10-22
    • Rudolf VyvialGuenter WallbillichHorst Trapp
    • Rudolf VyvialGuenter WallbillichHorst Trapp
    • G03F7/004G03F7/00G03F7/033G03C1/68
    • G03F7/033Y10S430/11
    • A photopolymerizable composition for the production of water-developable printing plates and relief plates, based on a water-soluble or water-dispersible mixture, containing a photoinitiator, of(a) one or more water-soluble or water-dispersible polymers containing copolymerized N-vinylpyrrolidone units and/or one or more polymers containing vinyl alcohol units and(b) one or more olefinically unsaturated photopolymerizable monomers,which comprises, as an additive or as the sole polymer, a water-soluble modified vinyl alcohol polymer which contains from 5 to 75, especially from 10 to 60, % by weight of chemically bonded oxyethylene units. These modified vinyl alcohol polymers are in particular oxyethylated polyvinyl alcohol or hydrolyzed graft polymers of vinyl esters onto polyethylene glycols. The compositions are easier to process into printing plates and relief plates, and exhibit a long shelf life.
    • 一种可光聚合组合物,用于生产含水可溶性或水分散性混合物(含有光引发剂)的水显影印版和浮雕版,其包含(a)一种或多种含有共聚合N的水溶性或水分散性聚合物 乙烯基吡咯烷酮单元和/或含有乙烯醇单元的一种或多种聚合物和(b)一种或多种烯属不饱和光聚合单体,其包含作为添加剂或唯一聚合物的水溶性改性乙烯醇聚合物,其含有5 至75重量%,特别是10至60重量%的化学键合氧化乙烯单元。 这些改性乙烯醇聚合物特别是氧乙基化的聚乙烯醇或乙烯基酯在聚乙二醇上的水解接枝聚合物。 组合物更容易加工成印版和浮雕板,并且具有长的保质期。