| 摘要 |
PURPOSE:To form a lithographic plate prevented from staining by using a polymer composed of units derived from a monomer having an alcoholic OH or phenolic OH, and a monomer having a COOH and having a specified ratio of its number average mol.wt. to its weight average mol.wt. CONSTITUTION:The polymer contains repeating units derived from a monomer having an alcoholic OH, preferably, such as 2-hydroxyethyl (meth)acrylate, or a monomer having a phenolic OH, preferably, such as N-(4- hydroxyphenyl)-(meth)acrylamide, in the molecular structure, and a monomer having a COOH. The polymer, preferably, has a weight average mol.wt. of 1.50X10<4>-4.00X10<4> and a dispersion ratio of <=3, and it is contained in an amt. of 40-97wt% of the total weight of the photosensitive compsn. |
