Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Patent
1985-02-07
1986-09-30
Thomas, Alexander S.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
430945, 369284, 369286, 369288, 428 64, 428 65, G11B 724, B32B 2730
Patent
active
046147055
ABSTRACT:
This invention relates to an optical information recording medium comprising a substrate, recording layer, under layer and/or under layer having an information track of concavo-convex pattern, characterized in that said under layer on the substrate is formed by curing a light-curable composition by active ray irradiation, and that said light-curable composition contains at least one of photo-polymerizable components selected from the group consisting of (A) difunctional acrylate and/or methacrylate having a functional group comprising a combination of an alkylene glycol with a cycloaliphatic and/or polycycloaliphatic hydrocarbonyl group, (B) difunctional acrylate and/or methacrylate having the general formula, ##STR1## wherein R.sub.1 represents hydrogen or methyl group and n represents an integer of 1 to 10, and (C) difunctional acrylate and/or methacrylate having the general formula, ##STR2## wherein R.sub.1 represents hydrogen or methyl group; R.sub.2 represents an alkylene group of C.sub.2 to C.sub.4 ; and n represents an integer of 1 to 20.
REFERENCES:
patent: 4230939 (1980-10-01), De Bont et al.
patent: 4374077 (1983-02-01), Kefeld
Ricoh Co. Ltd.
Thomas Alexander S.
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