| 摘要 |
PURPOSE:To provide a printing plate superior in abrasion resistance in exposed parts and good in plate wear resistance. CONSTITUTION:This photosensitive composition is a negative type containing a diazonium compound and a block copolymer comprising a polymer component (A) having structural units each represented by formula I and a polymer component (B) having structural units each represented by formula II. In formulae I and II, R<1> is H or methyl; X<1> is a simple bond, an ester or amide bond; R<2> is a 1-15C optionally substituted hydrocarbon group; R<3> is H or methyl; X<2> is a simple bond, or a divalent bonding group composed of >=2 kinds of atoms selected from C, H, N, O, and S; Z is -COOH or the like; each of R<4> and R<5> is H or an optionally substituted 1-15C hydrocarbon, group; R<6> is an optionally substituted 1-15C hydrocarbon group. |
