ACTIVE ENERGY LINE HARDENING TYPE RESIN COMPOSITION FOR FRESNEL LENS AND FRESNEL LENS SHEET

摘要

PROBLEM TO BE SOLVED: To provide an active energy line hardening type resin composition for Fresnel lens and a Fresnel lens sheet using the composition which has a high elastic modulus and a high refractive index, whose adhesion for a plastic base material and transparency are excellent, whose lens layer shows excellent shape holding power in a broad temperature range, and which does not easily have chip or crack of the shape by external force.;SOLUTION: The active energy line hardening type resin composition for Fresnel lens and the Fresnel lens sheet using the composition contain epoxy (meth)acrylate (a) which has a ring structure, and whose epoxy equivalency containing two or more (meth)acryloyl group is 450 g/eq or more, a specific three-functional (meth)acrylate (b), (meth)acrylate (c) from an aliphatic polyhydric alcohol which has propylene oxide structure whose molecular weight is 700 or less, and a monofunctional (meth)acrylate (d) which has a ring structure as essential ingredients.;COPYRIGHT: (C)2003,JPO