Patent ID: 6284185
Filing Date: 2001-09-04
Classification: C08F,C09J,G11B

Abstract:
A method for preparing an information recording medium comprising coating the ultraviolet-curable adhesive composition on a substrate which is a base board for an optical disk, said base board showing transmittance of 0.01-20% at all wavelengths of energy beams in the region not less than 280 nm but not more than 380 nm, and thereafter firmly contacting the coating surface of this substrate with another substrate, and then irradiating any of said substrate, said another substrate, or both with ultraviolet rays without the use of heat; said ultraviolet-curable adhesive composition comprising 2,4,6trimethylbenzoldiphenylphosphie oxide as a photopolymerization initiator and an ultraviolet-curable compound which is a resin composed of 20-95 w/w % of a monomer having at least one (meth)acryloyl group in the molecule and 5-80 w/w % of an oligomer having at least two (meth)acryloyl groups in the molecule; said another substrate shows transmittance of 0.01-20% at all wavelengths of energy beams in the region not less than 280 nm but no more than 380 nm.