| 摘要 |
PURPOSE:The titled composition having high modulus of elasticity and elongation, improved water and heat resistance, comprising a specific urethane acrylate, trisacryloyloxyalkyl isocyanurate and a monofunctional unsaturated compound. CONSTITUTION:The aimed composition comprising (A) 30-70wt% urethane acrylate obtained by reacting a polyisocyanate with a polyether polyol (preferably polytetramethylene glycol) having 600-4,000, preferably 800-2,000 polyether polyol number-average molecular weight, a diol (e.g., ethylene glycol, etc.) having 60-200 molecular weight and a monohydroxyalkyl acrylate, (B) 10-30wt% trisacryloyloxyalkyl isocyanurate and (C) a monofunctional unsaturated compound (preferably N-vinylpyrrolidone or isobornyl acrylate).
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