| 摘要 |
PURPOSE: To adhere two optical disk substrates in a good state and to obtain an optical disk having excellent reliability and storage stability without influencing a magnetic recording layer by using an adhesive comprising a compsn. of two kinds of room-temp. hardening type resin. CONSTITUTION: Two transparent substrates at least one of which has an information recording layer are laminated with the information recording layer inside with an adhesive comprising a compsn. of two kinds of room temp. hardening type resin to obtain an optical disk. The one kind of the adhesive material consists of a polymer having alkoxysilyl groups at the molecular ends and/or in the side chains and a condensation catalyst, and the other adhesive consists of a polymer having each at least one photopolymerizable unsatd. group and alkoxysilyl group in one molecule, photopolymn. initiator and condensation catalyst. Moreover, neither of these resin compsns. contain a specified alkoxysilane or its partial hydrolyzed material. Thereby obtaining optical disk has excellent mechanical shock resistance and durability. |
