G - Physics – 03 – F
Patent
G - Physics
03
F
G03F 7/035 (2006.01) G03F 7/033 (2006.01)
Patent
CA 2184182
Provided are a photosensitive resin composition having an anionic group and a cationic group, which is characterized in that it has an anionic group content of 0.15 mole/kg or more and a cationic group content of 0.15 mole/kg or more and contains a cationic group-having polymer having a number average molecular weight of 1000 or more, and also a printing plate material to be produced by applying the composition onto a support. The composition has excellent developability with water, and this gives a flexographic printing plate having excellent durability in printing in aqueous ink and having excellent image reproducibility in flexography.
L'invention concerne une composition de résine photosensible comportant au moins 0,15 mole/kg de groupes anioniques et au moins 0,15 mole/kg de groupes cationiques et un polymère contenant un groupe cationique d'un poids moléculaire moyen en nombre d'au moins 1000. Elle porte aussi sur une planche d'impression produite par enduction d'un support de ladite composition. Cette composition permet de produire des planches de flexographie présentant d'excellentes qualités pour le développement à l'eau, une excellente résistance à l'impression à l'aide d'encres aqueuses et assurant une excellente reproduction de l'image.
Kashio Shigetora
Sasashita Katsutoshi
Tanaka Shinji
Smart & Biggar
Toray Industries Inc.
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