| 摘要 |
1329873 Photosensitive polyamide composition MITSUI MINING & SMELTING CO Ltd 9 Sept 1970 [17 Oct 1969] 43159/70 Heading C3R [Also in Division G2] A photosensitive composition suitable for use in the preparation of printing plates comprises (a) an alcohol-soluble polyamide, (b) a crosslinking agent therefor selected from acrylate and methacrylate salts, acrylamide, methacrylamide and diacetone acrylamide, (c) a thermopolymerization inhibitor and (d) a light-reaction initiator. The following ingredients are preferred: Cross-linking agents: Calcium acrylate, barium acrylate, lead acrylate, cadmium acrylate, zinc acrylate, zinc methacrylate, lead methacrylate, cadmium methacrylate, and calcium methacrylate, Thermopolymerization inhibitors: hydroquinone, p-tert. butyl catechol and ethylene thiourea, Light-reaction initiators: benzophenone and 4,41-dimethoxybenzophenone. |
