申请人:Showa Denko K.K.
公开号:EP2963070A1
公开(公告)日:2016-01-06
The present invention provides a curable composition, which contains a crosslinking aid (B) containing three or more allyl groups in the molecule in an amount of 1 to 50 parts by mass, polyfunctional (meth)acrylic compound (C) in an amount of 5 to 50 parts by mass, and photopolymerization initiator (D1) and/or thermal polymerization initiator (D2) in an amount of 0.1 to 10 parts by mass, respectively, as a polymerization initiator (D) to 100 parts by mass of allyl group-terminated allyl ester oligomer (A);
wherein the crosslinking aid (B) containing allyl group is a compound containing three or more allyl groups in a molecule;
wherein the content of impurities derived from the crosslinking aid (B) in the curable composition is less than 0.1 mass%;
wherein the content of the (meth)acrylic compound containing a hydroxyl group in a molecule (C1) in the curable composition is 0.5 to 30 mass%.
By polymerizing and curing the curable composition of the present invention, it is possible to obtain a film or sheet material having a transparency required for optical applications, high surface hardness, excellent heat resistance and low linear expansion coefficient.
本发明提供了一种可固化组合物,该组合物含有分子中含有三个或三个以上烯丙基的交联助剂(B),其用量为1至50份(质量);多官能度(甲基)丙烯酸化合物(C),其用量为5至50份(质量);光聚合引发剂(D1)和/或热聚合引发剂(D2),其用量分别为0.分别以 0.1 至 10 份(质量份)的聚合引发剂 (D) 与 100 份(质量份)的烯丙基封端烯丙基酯低聚物 (A);
其中含有烯丙基的交联助剂(B)是分子中含有三个或三个以上烯丙基的化合物;
其中可固化组合物中由交联助剂(B)衍生的杂质含量小于 0.1 质量%;
其中可固化组合物中分子中含有羟基的 (甲基) 丙烯酸化合物 (C1) 的含量为 0.5 至 30 质量%。
通过对本发明的可固化组合物进行聚合和固化,可以获得具有光学应用所需的透 明度、高表面硬度、优异的耐热性和低线性膨胀系数的薄膜或薄片材料。