OPTICAL RECORDING MEDIUM

PURPOSE:To reduce volatility and to improve light resistance by forming a protective layer of a cured UV-curing resin having one or more acryloyl groups and constituent units represented by a specified formula in one molecule on the surface of a substrate. CONSTITUTION:A substrate 1 is made of polyc...

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Bibliographic Details
Main Authors SANTO TAKESHI, TAMURA MIKI, SUGATA HIROYUKI
Format Patent
LanguageEnglish
Published 16.09.1994
Edition5
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:PURPOSE:To reduce volatility and to improve light resistance by forming a protective layer of a cured UV-curing resin having one or more acryloyl groups and constituent units represented by a specified formula in one molecule on the surface of a substrate. CONSTITUTION:A substrate 1 is made of polycarbonate resin, epoxy resin, polyester resin, etc. A protective layer 5 is formed by curing a UV-curing resin by having one or more acryloyl groups and constituent units represented structural formula I or II in one molecule. Since benzo-triazole groups having UV absorbing ability have been bonded in the UV-curing resin, the objective optical recording medium having low volatility, excellent in light resistance over a long time and also excellent in scratch resistance is obtd. In the formulae I, II, A is direct bond, alkylidene, O, S, etc., X is H, halogen, etc., R is H, alkyl, etc., and (m) is 1-3.
Bibliography:Application Number: JP19930067428