Coated optical disks

Details Coated optical disks Coated optical disks

G - Physics

11

B

G11B 7/24 (2006.01) G11B 7/254 (2006.01)

Patent

CA 2263351

Optical disks comprise a substrate, a metallized layer and a coating formed from a radiation-curable composition. The radiation-curable composition comprises a first component selected from the group consisting of alkanediol diacrylates, alkanediol dimethacrylates, alkene glycol diacrylates, alkene glycol dimethacrylates, and mixture thereof, and a second component comprising an acrylate- or methacrylate-containing alkoxylated bisphenol A compound. The compositions further include a photoinitiator and an adhesion promoter for promoting adhesion of the coating to the metallized substrate.

L'invention concerne des disques optiques comportant un substrat, une couche métallisée et une revêtement formé à partir d'une composition susceptible de durcir par rayonnement. La composition susceptible de durcir par rayonnement comporte un premier constituant sélectionné dans le groupe formé par des diacrylates d'alcanediol, des diméthacrylates d'alcanediol, des diacrylates d'alcène glycol, des diméthacrylates d'alcène glycol et leurs mélanges; et un deuxième constituant qui comporte un composé de bisphénol A alcoxylé renfermant un acrylate ou un méthacrylate. Les compositions comportent en outre un photoamorceur et un promoteur d'adhésion servant à activer l'adhésion du revêtement au substrat métallisé.

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