To provide a photocurable liquid resin composition that can produce cured products exhibiting a high refractive index, good shape restorability, and superior adhesion to substrates. The photocurable resin composition comprises (A) 20-80 wt % of a urethane (meth) acrylate obtained by reacting a polyether polyol having an alkyleneoxy structure in the molecule, an organic polyisocyanate compound, and a (meth) acrylate containing a hydroxyl group, (B) 10-70 wt % of a monofunctional ethylenically unsaturated compound, (C) 5-25 wt % of a (meth) acrylate monomer having four or more functional groups, and (D) 0.1-10 wt % of a photoinitiator. Cured products are useful for forming an optical part such as a lens of a lens sheet or a back light using the lens sheet.
提供一种光固化液态
树脂组合物,能够产生具有高折射率、良好形状恢复性和优异的基底附着力的固化产品。该光固化
树脂组合物包括:(A)20-80重量%的聚醚多元醇(分子中含有烷氧基结构)、有机多
异氰酸酯化合物和含有羟基的(甲基)
丙烯酸酯反应制得的聚
氨酯(甲基)
丙烯酸酯;(B)10-70重量%的单官能基
乙烯基不饱和化合物;(C)5-25重量%的具有四个或更多官能基的(甲基)
丙烯酸酯单体;(D)0.1-10重量%的光
引发剂。固化产品可用于制造光学部件,例如使用透镜片或背光使用透镜片的透镜。