申请人:Shin-Etsu Chemical Co., Ltd.
公开号:EP1947133A1
公开(公告)日:2008-07-23
Provided is an ultraviolet-curable silicone composition including: (A) a non-terminal epoxy group-containing organopolysiloxane, (B) an organopolysiloxane containing epoxy groups at the two terminals of the molecular chain, and an onium salt photoinitiator capable of generating cations upon irradiation with ultraviolet light. The silicone composition of the present invention yields a cured film that exhibits excellent ultraviolet-curability and can be readily peeled from a pressure-sensitively adhesive material. In particular, the silicone composition yields a cured film that exhibits a tight release force relative to pressure-sensitive adhesives such as acrylic-based pressure-sensitive adhesives, and also exhibits minimal fluctuation in the release force.
本发明提供了一种紫外线固化有机硅组合物,其中包括:(A) 非末端含环氧基团的有机聚硅氧烷,(B) 在分子链的两个末端含有环氧基团的有机聚硅氧烷,以及在紫外线照射下能够生成阳离子的鎓盐光引发剂。本发明的有机硅组合物产生的固化薄膜具有优异的紫外线固化性,并且可以很容易地从压敏粘合材料上剥离。特别是,与丙烯酸类压敏粘合剂等压敏粘合剂相比,本发明的有机硅组合物所产生的固化薄膜具有紧密的剥离力,而且剥离力的波动极小。