申请人:Kodak Polychrome Graphics Company Ltd.
公开号:EP1162209A1
公开(公告)日:2001-12-12
The present invention relates to particular acetal copolymers and radiation-sensitive compositions comprising said copolymers and, inter alia, are excellently suitable for the production of lithographic printing plates. In particular, the invention relates to acetal copolymers containing units of formula
wherein
each Z is independently selected from the group consisting of O, S, and NR5 with R5 being selected from the group consisting of hydrogen, C1-C4 alkyl and phenyl, the phenyl being optionally substituted with one or two substituents selected from the group consisting of halogen, C1-C4 alkoxy and C1-C4 alkyl;
R3 and R4 are independently selected from C1-C4 alkyl and a phenyl group, the phenyl being optionally substituted with one or two substituents selected from the group consisting of halogen, C1-C4 alkoxy and C1-C4 alkyl; m is 0, 1 or 2 and n is 0, 1, 2 or 3;
each A being the same or different, each C being the same or different and each D being the same or different.
本发明涉及特殊的缩醛共聚物和由上述共聚物组成的辐射敏感性组合物,尤其适用于平版印刷板的生产。特别是,本发明涉及含有式中单元的缩醛共聚物
式中
每个 Z 独立地选自由 O、S 和 NR5 组成的组,其中 R5 选自由氢、C1-C4 烷基和苯基组成的组,苯基可选择被一个或两个选自由卤素、C1-C4 烷氧基和 C1-C4 烷基组成的组的取代基取代;
R3 和 R4 独立选自 C1-C4 烷基和苯基,苯基可任选被一个或两个选自卤素、C1-C4 烷氧基和 C1-C4 烷基的取代基取代;m 为 0、1 或 2,n 为 0、1、2 或 3;
每个 A 相同或不同,每个 C 相同或不同,每个 D 相同或不同。