Active-energy-ray-curable composition active-energy-ray-curable adhesive composition adhesive adhesive sheet and novel urethane methacrylate

摘要

An object of the present invention is to provide an active energy ray curable composition containing urethane (meth) acrylate having a low dielectric constant and also excellent compatibility. (Meth) acrylate (A) which is a reaction product of a polyester polyol (a1), a polyisocyanate (a2) and a hydroxyl group-containing (meth) acrylate (a3) And the permittivity of the rate (A) is 7.0 or less.