PRODUCTION OF OPTICAL DISK SUBSTRATE

PURPOSE:To decrease the amt. of the unreacted monomer included in a surface part by irradiating the specific optical disk substrate with UV rays in an inert gaseous atmosphere to increase the degree of polymn. of the optical disk substrate. CONSTITUTION:The multifunctional (meth)acrylate compd. expr...

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Bibliographische Detailangaben
Hauptverfasser:	ARITOMI MITSUTOSHI, SANO YOKO, USAMI TAKAO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PURPOSE:To decrease the amt. of the unreacted monomer included in a surface part by irradiating the specific optical disk substrate with UV rays in an inert gaseous atmosphere to increase the degree of polymn. of the optical disk substrate. CONSTITUTION:The multifunctional (meth)acrylate compd. expressed by formula I is subjected to radical polymn. and the polymer is formed as a plate body or worked to the plate body. The resulted optical disk substrate is irradiated with UV rays in the inert gaseous atmosphere to increase the degree of polymn. of the optical disk surface. In the formula I, R1 and R2 may be the same or different and are respectively hydrogen or methyl group; n is 0 or 1 integer. The remaining rate of the unreacted monomer of the surface is decreased in this way and the corrosion of a thin metallic film, such as recording film, is suppressed.