申请人:MITSUBISHI KASEI CORPORATION
公开号:EP0071236A1
公开(公告)日:1983-02-09
A photosensitive lithographic plate having, on a substrate, a photosensitive layer comprising a photosensitive polyester (A) containing at least:
(a) an aromatic dicarboxylic acid unit represented by the general formula
wherein m and n each represents an integer of 0 or 1, with at least one of them being 1,
(b) a dicarboxylic acid unit having a sulfonate group. and
(c) a diol unit represented by the general formula:
reoresents a hvdrooenated benzene ring, R1 and R2 each represents an alkylene group of 2-4 carbon atoms, R3 and R4 each represents a hydrogen atom or an alkyl group of 1-6 carbon atoms, r and s each represents an integer of from 0 to 3 and t represents an integer of 0 or 1.
一种感光平版印刷板,在基底上有一个感光层,该感光层包括至少含有以下成分的感光聚酯(A):
(a) 由通式表示的芳香族二羧酸单元
其中 m 和 n 分别代表 0 或 1 的整数,其中至少一个为 1、
(b) 具有磺酸基的二羧酸单元。
(c) 由通式表示的二元醇单元:
代表一个氢化苯环,R1 和 R2 分别代表 2-4 个碳原子的亚烷基,R3 和 R4 分别代表氢原子或 1-6 个碳原子的烷基,r 和 s 分别代表 0 至 3 的整数,t 代表 0 或 1 的整数。