| 摘要 |
PROBLEM TO BE SOLVED: To provide a radiation-curable composition capable of affording a cured product having excellent transparency and mechanical strength and excellent balance between surface hardness and dimensional stability of a substrate as an adherend in a temperature and humidity change, to provide the cured product thereof and to provide a laminate having a layer of the cured product thereof. SOLUTION: The radiation-curable composition comprises (A) a urethane (meth)acrylate, (B) a monofunctional (meth)acrylate and (C) a multifunctional (meth)acrylate having≤300 molecular weight. (A) The urethane (meth)acrylate is a reaction product of (A-1) a polyisocyanate with (A-2) a diol having <400 molecular weight, (A-3) a polyol having≥400 to <1,500 number-average molecular weight, (A-4) a polyol having≥1,500 number-average molecular weight and (A-5) a hydroxy group-containing (meth)acrylate. The radiation-cured product is obtained by curing the radiation-curable composition with exposure to radiation. The laminate has the layer of the radiation-cured product. COPYRIGHT: (C)2009,JPO&INPIT
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