PURPOSE: To improve the printability, the water resisting property and the shelf-life stability of a printing plate by incorporating a specified organopolysiloxane in the titled composition.
CONSTITUTION: Said organopolysiloxane contains one or more of each siloxane unit shown by formulas I and II in a molecule. In the formulas, R1 is alkylene group, R2 and R3 are each a (un)substd. monovalent hydrocarbon group, (a) and (b) are each 0, 1 or 2, (c) is 1, 2 or 3. The titled composition comprises 100pts.wt. a resin mixture which is composed of 0.1W50wt.% said polysiloxane and 99.9W50wt.% polyvinyl alcohol, 1W100pts.wt. of a nonsilicone type compd. contg. an active hydrogen atom. and an unsatd. group (such as tetramethylol methane triacrylate), 0.01W20pts.wt. a photocrosslinking agent (such as diazo resin), 0W10pts.wt. an optical sensitizer (such as ethylbenzophenone) and 40W800 pts.wt. water.
NAKANISHI NOBORU
NAKAZATO MORIZO
| JPS60108841A | 1985-06-14 | |||
| JPS5317405A | 1978-02-17 | |||
| JPS539602A | 1978-01-28 | |||
| JPS52150103A | 1977-12-13 | |||
| JPS6010245A | 1985-01-19 | |||
| JPS5351004A | 1978-05-10 |