| 摘要 |
PURPOSE:To obtain a composition for printing ink having excellent stability of liquid composition and high curing rate and little in discoloration of cured material, containing a polyurethane (meth)acrylate and N-vinyl-epsilon-caprolactam. CONSTITUTION:The objective composition suitable for ultraviolet-curing type screen printing ink comprising (A) a polyurethane (meth)acrylate obtained by reacting a polyol compound with an organic diisocyanate and a hydroxyl group- containing (meth)acrylic acid ester until isocyanate group is exhausted, (B) N-vinyl-epsilon-caprolactam and optionally (C) phenylglycidyl ether acrylate, a photopolymerization initiator, etc. |
