Vinyl polymer and photosensitive lithographic printing plate containing the same

【Patent Name】 Vinyl polymer and photosensitive lithographic printing plate containing the same [Applicant] Lekai Group Second Film Factory [Inventor] Yao Xinding; Men Hongwei; Liu Wei; Chai Tinghui; Gao Yingxin; Li Jianbo [Address of the main applicant] 473003 Station South Road, Nanyang City, Henan Province [Application Number] 200410060525.0
【 Application Date 】 2004.09.20
【Approval Announcement No.】 1752117
【 Validation announcement date 】 2006.03.29
[Main classification number] C08F20/10(2006.01)I
[Categorical Information] C08F20/10(2006.01)I G03F7/004(2006.01)I G03F7/022(2006.01)I
[Summary Item] 1. A vinyl polymer characterized in that it is a copolymer containing the following three structural units (a), (b), (c): (1) Alkali-soluble structural units In the formula, X1 represents -O- or -NR3-, R1 represents -H or -CH3, R2 represents a single bond or a divalent organic bond, Y1 represents an arylene group, n represents 0 or 1, and R3 represents that it may have a hydrogen atom Or a substituted alkyl, cycloalkyl, aryl, or arylalkyl radical of 1 to 12 carbon atoms. Z1 represents a group having an acidic hydrogen atom, and m represents an integer of 1 or more. (2) The structural unit Z having an alkali-soluble maleimides represents a group having an acidic hydrogen atom. Such as -COOH, -OH, -SO2NH2 and so on. (3) Carboxylic acid esters having an acid-induced phase transition structure R represents an alkyl group, a cycloalkyl group, or an aralkyl group.
[Instructions CD-ROM] D0613-1
[Abstract] The present invention relates to a vinyl polymer and a photosensitive positive-type lithographic printing plate to which the polymer is added. The vinyl polymer is a copolymer of three structural units such as a structural unit having an alkali-soluble structure, a structural unit having an alkali-soluble maleimide, a carboxylate structural unit having an acid-induced phase change property, and the like. . The flat printing plate adopting the high molecular polymer has the characteristics of large developing latitude, good abrasion resistance of the photosensitive layer, and high resistance to printing force, and the photosensitive layer is excellent in chemical resistance and is suitable for printing with UV ink. The plate material using the high molecular polymer can resist printing force of more than 200,000 impressions using ordinary plain printing ink, and can reach up to 50,000 impressions using UV ink, and no pollution occurs during printing.
【 Agency 】 Zhengzhou Zhongyuan Patent Office Co., Ltd. [Agent] Liu Jianfang