URETHANE METHACRYLATE, RESIN COMPOSITION AND PRINTING INK RESIN COMPOSITION CONTAINING THE SAME, AND ITS CURED PRODUCTS

摘要

PURPOSE:To obtain a urethane methacrylate which has a high curing rate and can give a cured product excellent in weathering resistance, light resistance, adhesion, etc., by mixing a specified urethane methacrylate with another ethylenically unsaturated compound and optionally a photopolymerization initiator. CONSTITUTION:The title resin composition comprises a urethane methacrylate (A) obtained by reacting a hindered amine compound having a group of formula I in the molecule with a compound of formula II, an ethylenically unsaturated compound (B) other than component A and a photopolymerization initiator (C) as an optional component. Examples of component B include tetrahydrofuryl (meth)acrylate and 2-hydroxyethyl (meth)acrylate. The mixing ratio among components A-C is desirably such that 0.01-20 pts.wt. component A per 100 pts.wt. component B, and 0.-25 pts.wt. component C per 100 pts.wt. components A and B.