| 摘要 |
PURPOSE:To provide the substrate for an optical disk having excellent heat resistance and electrical insulation characteristic. CONSTITUTION:This substrate consists essentially of an epoxy resin obtd. by further epoxylating the resin having the vinyl groups obtd. by bringing a compd. having >=1 pieces of the vinyl groups and one piece of epoxy group in one molecule, at least one kind selected from polymers contg. a polybasic acid anhydride, polybasic acid, acid terminal end polymer and carboxylic acid group and at least one kind selected from compds. having >=1 pieces of active hydrogen into reaction and a hardener for this epoxy resin. As a result, the substrate for the optical disk having the excellent heat resistance and electrical insulation characteristic is obtd. |
