Ultraviolet-curing resin for protecting coat of optical disk.

摘要

An ultraviolet-curing resin compound protects highly effectively recording and reflecting films at high temperature and high moisture. The ultraviolet-curing resin compound comprises 5 SIMILAR 50 weight % of trifunctional or polyfunctional acrylic ester or metacrylic ester, 95 SIMILAR 50 % of acrylic ester or metacrylic ester of cyclic structure, and 0.2 SIMILAR 20 parts by weight of a photopolymerization initiator with respect to a total of 100 parts by weight of the polyfunctional acrylic ester or metacrylic ester and the acrylic ester or metacrylic ester of cyclic structure. An optical disk has a protective film made of such an ultraviolet-curing resin compound which has been cured by exposure to ultraviolet radiation. <IMAGE>