POLYFUNTIONAL THIO(METH)ACRYLATE RESIN, ACTIVE-ENERGY-RAY CURABLE HARD COATING RESIN COMPOSITION CONTAINING THE SAME, CURED FILM OBTAINED BY CURING THE COMPOSITION, PLASTIC FILM LAMINATED THE CURED FILM, INJECTION MOLDED ARTICLE USING THE PLASTIC FILM AND PROCESSED PRODUCTS

摘要

PURPOSE: A polyfunctional thio(meth)acrylate resin is provided to have high hardness and scratch resistance, to have excellent hardcoating performance, and to have high cured film with high elongation and flexibility. CONSTITUTION: A polyfunctional thio(meth)acrylate resin is obtained by the ene-thiol reaction of a thiol terminal the of which the x value calculated by [weight average molecular weight of a polyfunctional thiol compound/thiol number in a polyfunctional thiol compound] and a (meth)acryloyl group at one terminal of a bifunctional (meth)acrylate compound and includes two or more terminal structure represented by chemical formula 1. The active energy ray-curable hardcoating resin composition contains a polyfunctional thio (meth)acrylate resin, a polyfunctional (meth)acrylate including two or more (meth)acryloyl groups, and a photopolymerization initiator.