公开(公告)号：US20020090566A1

公开(公告)日：2002-07-11

申请号：US09751183

申请日：2000-12-29

Applicant: Kodak Polychrome Graphics LLC.

Inventor： Hans-Joachim Timpe ,  Ursula Muller

IPC: G03F007/038

CPC classification number: B41C1/1008 ,  B41C1/1016 ,  B41C2201/02 ,  B41C2201/14 ,  B41C2210/04 ,  B41C2210/06 ,  B41C2210/24 ,  Y10S430/106 ,  Y10S430/107 ,  Y10S430/108 ,  Y10S430/11 ,  Y10S430/111 ,  Y10S430/145

Abstract: A polyvinyl acetal copolymer compound comprises the units A, B, C and D, wherein A is present in an amount of 0.5 to 30 wt.-% and is of the formula 1 wherein R is hydrogen, C1-C6 alkyl, nullCHnullCHCOOH or 2 B is present in an amount of 5 to 35 wt.-% and is of the formula 3 C is present in an amount of 10 to 55 wt.-% and is of the formula 4 wherein R1 is an alkyl group with up to 4 carbons, which is optionally substituted by an acid group, or a phenyl group to which an acid group is attached, wherein the phenyl group optionally comprises 1 to 2 further substituents selected from halogen atoms, amino, methoxy, ethoxy, methyl and ethyl groups, or is a group ZnullNR2nullCOnullYnullCOOH, wherein Z is an aliphatic, aromatic or araliphatic spacer group, R2 is hydrogen or an aliphatic, aromatic or araliphatic moiety and Y is a saturated or unsaturated chain- or ring-shaped spacer group, and unit C may have one or more occurrences in the copolymer with various moieties R1 independent of one another; and D is present in an amount of 10 to 40 wt.-% and is of the formula 5 wherein X is C1-C6 alkylene, a 5 or 6 membered saturated carbocyclic moiety optionally substituted with one or more substituents selected from the group consisting of C1-C4 alkyl, C1-C4 alkoxy or halogen, a 5 or 6 membered saturated heterocyclic moiety which comprises in the nucleus one or more heteroatoms selected from oxygen, nitrogen and sulfur, or a group of the formula I 6 wherein n is an integer from 0 to 4 and each R3 is independently selected from the group consisting of C1-C4 alkyl, halogen or C1-C4 alkoxy. A radiation-sensitive composition useful in a lithographic printing plate comprises (i) the above-described polyvinyl acetal copolymer; and (ii) a light-to-heat transformer compound.

Abstract translation: 聚乙烯醇缩醛共聚物化合物包括单元A，B，C和D，其中A以0.5至30重量％的量存在并具有下式：其中R是氢，C 1 -C 6烷基，-CH = CHCOOH 或B以5至35重量％的量存在，并且具有式C的存在量为10至55重量％，并且具有下式：其中R 1是具有至多4个碳的烷基 或任选被酸基取代的苯基或其中连接有酸基的苯基，其中苯基任选地包含1至2个选自卤素原子，氨基，甲氧基，乙氧基，甲基和乙基的其它取代基，或 是Z-NR2-CO-Y-COOH基团，其中Z是脂族，芳族或芳脂族间隔基，R2是氢或脂族，芳族或芳脂族部分，Y是饱和或不饱和的链或环形间隔基 基团和单元C可以在共聚物中具有一个或多个出现的各种部分R1彼此独立; 并且D以10至40重量％的量存在并且具有下式：其中X为C 1 -C 6亚烷基，任选被一个或多个选自以下的取代基取代的5或6元饱和碳环部分：C1 C 4烷基，C 1 -C 4烷氧基或卤素，5或6元饱和杂环部分，其在核中包含一个或多个选自氧，氮和硫的杂原子，或式I的基团，其中n是0的整数 至4，并且每个R 3独立地选自C 1 -C 4烷基，卤素或C 1 -C 4烷氧基。 可用于平版印刷版的辐射敏感组合物包含（i）上述聚乙烯醇缩醛共聚物; 和（ii）光 - 热变压器化合物。