Ultraviolet-curable composition and optical recording

Details Ultraviolet-curable composition and optical recording Ultraviolet-curable composition and optical recording

2005-08-02

2005-08-02

Dye, Rena (Department: 1774)

Stock material or miscellaneous articles

Circular sheet or circular blank

C428S064200, C428S064400, C369S001000, C369S272100

Reexamination Certificate

active

06924017

ABSTRACT:
The present invention provides an ultraviolet-curable composition having satisfactory protective performance even in endurance testing at high temperature and high humidity in an optical recording medium having for its reflective film Ag or a metal and/or alloy having Ag for its main component, and an optical recording medium in which it is applied. A cured film of an ultraviolet-curable composition, for which the pH value of a 1 wt % methanol solution of said ultraviolet-curable composition is within the range of 4.5 to 6.8, is coated onto a reflective film in the form of a protective film.

REFERENCES:
patent: 4127460 (1978-11-01), Gaske et al.
patent: 5573831 (1996-11-01), Suzuki et al.
patent: 1 058 250 (2000-12-01), None
patent: 7-192315 (1995-07-01), None
patent: WO 99/34361 (1999-07-01), None
patent: WO 00/09620 (2000-02-01), None

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