C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 4/02 (2006.01) C09J 4/06 (2006.01) G11B 7/24 (2006.01) G11B 7/254 (2006.01)
Patent
CA 2242047
A layer for protection coating and adhesion of DVD is formed by a photo-curing resin composition which comprises a photo-curing component which is cured by polymerization reaction of a unsaturated group, a photo-polymerization initiator and a phenol-based primary antioxidant, wherein this photo-curing component comprises a bi-functional urethane acrylate, an epoxy acrylate containing a bisphenol A skeleton, and a N-vinyl lactam compound, said polymerization initiator comprising a mono or di-benzoylphosphine oxide compound in an amount of 0.1% by weight or more to less than 5.0% by weight based on the total amount of said photo-curing components, and the viscosity of this resin composition at 25°C being in the range from 350 to 700 mPa~s.
Une couche pour revêtement protecteur et adhésion de DVD est formée par photoréticulation d'une composition à base de résine, renfermant un constituant photoréticulable réticulé par réaction de polymérisation d'un groupe insaturé, un initiateur de photopolymérisation et un antioxydant primaire à base de phénol; le constituant photoréticulable renferme un acrylate d'uréthane bifonctionnel, un époxyacrylate avec un squelette de bisphénol A, et un N-vinyllactame; l'initiateur de polymérisation contient un oxyde de mono- ou de di-benzoylphosphine à raison de 0,1 % à moins de 5,0 % en poids, basé sur la quantité totale desdits photoréticulants; la viscosité de cette composition de résine se situe dans une plage de 350-700 mPa~s à 25 degrés C.
Kirby Eades Gale Baker
Sumitomo Chemical Co. Ltd.
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