申请人:Okamoto Chemical Industry Co., Ltd.
公开号:US20040131967A1
公开(公告)日:2004-07-08
The present invention provides image-forming compositions and photosensitive lithographic plates which are excellent in sensitivity to infrared radiation, latitude of development, treatable area in m
2
, and printing durability. Specifically, the present invention provides an image-forming composition comprising (A) a polymeric compound obtainable by the addition reaction of a resinous polymer having one or more phenolic hydroxyl groups with a silane coupling agent of the following general formula (1) or (2), (B) an acid generator, (C) an infrared absorber, and (D) an alkali-soluble resin, and a photosensitive lithographic plate having this image-forming composition applied onto a substrate.
1
wherein X
1
and X
2
each represent a trimethoxysilyl group or the like; G
1
represents O or COO; R
1
and R
2
each independently represents a hydrogen atom or a methoxy group; R
3
represents (CH
2
)
m
which may have a hydrocarbon side chain; G
2
represents O or COO; R
4
represents a hydrogen atom or a straight-chain or branched alkyl group; and R
5
represents (CH
2
)
n
which may have a hydrocarbon side chain.
本发明提供了一种成像组合物和感光平版,其对红外辐射的灵敏度、显影的容限、可处理面积和印刷耐久性均表现出优异的特性。具体而言,本发明提供了一种成像组合物,包括(A)通过树脂聚合物具有一个或多个酚羟基与如下一般式(1)或(2)的硅烷偶联剂的加成反应获得的聚合物化合物,(B)酸发生剂,(C)红外吸收剂和(D)碱溶性树脂,并且将该成像组合物应用于基板上的感光平版。其中,X1和X2分别表示三甲氧基基团或类似基团;G1表示O或COO;R1和R2各自独立地表示氢原子或甲氧基;R3表示(CH2)m,可以具有碳氢侧链;G2表示O或COO;R4表示氢原子或直链或支链烷基;R5表示(CH2)n,可以具有碳氢侧链。