| 摘要 |
PURPOSE:To improve the coating and developing properties, the initial ink formation and the plate wear of the titled composition by incorporating a condensed polymer resin obtd. by condensing a kind of specific substd. phenol and aldehyde in the titled composition. CONSTITUTION:The condensed polymer resin obtd. by condensing at least one kind of the substd. phenol shown by the formula and the aldehyde is incorporated in the titled composition contg. a photosensitive diazo resin and a lipophilic high polymer compd. In the formula, R1-R3 are each hydrogen atom or 1-10C alkyl group, at least one of R1-R3 groups is >=4C substituting group. The usable lipophilic polymer compd. is compounded usually 40-99wt.% in the titled composition by a solid basis. And, the photosensitive diazo resin is preferably compounded 3-30wt.% in the titled composition by the solid basis. Thus, the coating and developing properties, the initial ink formation and the plate wear of the titled composition are improved. |
