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    • 44. 发明授权
    • Addition reaction-curable organopolysilmethylenesiloxane copolymer composition
    • 加成反应可固化的有机聚硅氧烷硅氧烷共聚物组合物
    • US08759456B2
    • 2014-06-24
    • US13405588
    • 2012-02-27
    • Toshio ShiobaraTsutomu KashiwagiTakeshi Fukuda
    • Toshio ShiobaraTsutomu KashiwagiTakeshi Fukuda
    • C08G77/50C08L83/10C08L83/14
    • C08G77/50C08L83/10C08L83/14
    • Disclosed is an addition reaction-curable organopolysilmethylenesiloxane copolymer composition including: (A) an organopolysilmethylenesiloxane copolymer represented by formula (a) shown below: which has in one molecule at least two alkenyl groups bonding to silicon atoms; (B) an organopolysiloxane represented by formula (b) shown below: R2aSiO(4-a)/2  (b) which has in one molecule at least two alkenyl groups bonding to silicon atoms; (C) an organohydrogenpolysilmethylenesiloxane and/or organohydrogenpolysiloxane; and (D) a platinum group metal-based catalyst. The copolymer composition excels in heat resistance, electrical insulation, mechanical strength, and optical properties, and exhibits good water resistance, hydrolysis resistance and gas barrier properties under severe use conditions without suffering gas permeability and poor chemical resistance inherent in silicone rubber.
    • 公开了一种加成反应可固化的有机聚硅氧烷硅氧烷共聚物组合物,其包含:(A)由下式(a)表示的有机聚硅氧烷基硅氧烷共聚物:其在一个分子中具有至少两个与硅原子键合的烯基; (B)由下式(b)表示的有机聚硅氧烷:在一分子中具有至少两个与硅原子键合的烯基的R2aSiO(4-a)/ 2(b) (C)有机氢聚硅亚甲基硅氧烷和/或有机氢聚硅氧烷; 和(D)铂族金属类催化剂。 该共聚物组合物的耐热性,电绝缘性,机械强度和光学性能优异,并且在严苛的使用条件下表现出良好的耐水性,耐水解性和气体阻隔性,而不会导致硅橡胶固有的气体渗透性和差的耐化学性。