ACTIVATION ENERGY RAY-CURING RESIN COMPOSITION

摘要

PURPOSE:To obtain an activation energy ray-curing resin composition providing a cured material not readily causing cracks by mechanical impact and thermal shock. CONSTITUTION:In a composition comprising a partially esterified substance of a polybasic acid ahhydride and a hydroxyalkyl (meth)acrylate, a reaction diluent, a polymer for binder and a photopolymerization sensitizer, a copolymer of (meth)acrylic acid and alpha-methylstyrene is used as the polymer for binder to give an activation energy ray-curing resin composition.