| 摘要 |
PURPOSE: To obtain a process for producing a wetting-waterless photosensitive planographic printing plate capable of obtaining a silicone rubber layer having good performance by applying a coating liquid for the condensation type silicone rubber layer having sufficient stability with the lapse of time and curing the coating by crosslinking. CONSTITUTION: In this process for producing the wetting-waterless photosensitive planographic printing plate, a soln contg. the following compds. is applied on a silicone rubber layer, that is, 100 pts.wt. of linear organo-polysiloxane having hydroxyl groups at both terminals, 3 to 40 pts.wt. of a trifunctional or quadrifunctional condensation type crosslinking agent expressed by (R<1> )p.Si.(X)q, 0.01 to 40 pts.wt. of a catalyst, and the weight ratio of a bifunctional condensation type crosslinking agent expressed by (R<7> )2 .Si.(X)2 to the previous condensation type crosslinking agent is 0.1 to 1.5, and the content of a hydrogen carbide solvent is 100 to 5000 pts.wt., where the total content of two kinds of these condensation type crosslinking agents is <=60 pts.wt. In the formulas, R<1> , R<7> denote 1 to 10C alkyl groups, vinyl groups or aryl groups; X denotes hydrogen atom, a halogen atom, etc., (p) denotes 0 or 1, (q) denotes 3 or 4 and p+q is 4. |
