ULTRAVIOLET CURABLE RESIN COMPOSITION AND CURING PRODUCT THEREOF

摘要

[PROBLEMS] To provide an ultraviolet curable resin composition, or curing product thereof, that excels in transparency and low water absorption and realizes reduced warpage and high durability, which ultraviolet curable resin composition, or curing product thereof, can be used as a protective coating agent, or curing product thereof, for a high-density optical disk, especially an optical disk capable of read and/or write using blue laser. [MEANS FOR SOLVING PROBLEMS] There is provided an ultraviolet curable resin composition of 100 to 5000 mPa s viscosity as measured at 25°C by the use of B-type viscometer comprising component consisting of a di(meth)acrylic ester of pentacyclopentadecanedimethanol (A), photopolymerization initiator (B) and ethylenically unsaturated compound other than the component (A) (C).