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US08404969B2 Urethane resin, actinic energy ray curable adhesive, and back protective sheet for solar cell 失效
聚氨酯树脂，光化学能量射线固化型粘合剂和太阳能电池背面保护片

Urethane resin, actinic energy ray curable adhesive, and back protective sheet for solar cell
Abstract:
An actinic energy ray curable adhesive contains a urethane resin (D) and a epoxy resin (E). The urethane resin (D) is prepared by reacting a diol ingredient (A1) having no (meth)acryloyl group, an optional diol ingredient (A2) having no (meth)acryloyl group, no carbonate structure and no alicyclic structure, a polyol ingredient (B) having a (meth)acryloyl group and two or more hydroxyl groups in a molecule, and a polyisocyanate ingredient (C) together. The ingredient (A1) is selected from a diol (a1) having a carbonate structure and an alicyclic structure in a molecule, a combination of a diol (a2) having no alicyclic structure but having a carbonate structure, and a diol (a3) having no carbonate structure but having an alicyclic structure, and a combination of a diol (a1) and at least one of the diol (a2) and the diol (a3).
Abstract(Chinese):

光化学能量射线固化型粘合剂含有聚氨酯树脂（D）和环氧树脂（E）。 聚氨酯树脂（D）通过使没有（甲基）丙烯酰基的二醇成分（A1），不具有（甲基）丙烯酰基的任选的二醇成分（A2），不具有碳酸酯结构且没有脂环结构的多元醇成分 （B）在分子中具有（甲基）丙烯酰基和两个或更多个羟基，以及多异氰酸酯成分（C）。 成分（A1）选自分子中具有碳酸酯结构和脂环结构的二醇（a1），不具有脂环结构但具有碳酸酯结构的二醇（a2）和具有碳酸酯结构的二醇（a3）的组合，以及具有 没有碳酸酯结构但具有脂环结构，以及二醇（a1）和二醇（a2）和二醇（a3）中的至少一种的组合。

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