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    • 71. 发明授权
    • Method for the preparation of silicone rubber composition
    • 硅橡胶组合物的制备方法
    • US5013772A
    • 1991-05-07
    • US387600
    • 1989-07-28
    • Hironao FujikiMorio Oohashi
    • Hironao FujikiMorio Oohashi
    • C08K3/36C08K5/544C08K9/06C08L83/04C08L83/05C08L83/07
    • C08K9/06C08L83/04C08G77/12C08G77/20
    • A novel method is proposed for the preparation of a curable organopolysiloxane composition which is suitable as a material of a mold-making having excellent mechanical properties and durability in use for replica molding. The method comprises (a) blending a vinyl-containing organopolysiloxane with a hydrophobic reinforcing silica filler and hexamethyl disilazane, optionally, together with water each in a limited amount, (b) subjecting the blend to a heat treatment and (c) admixing the heat-treated blend with an organohydrogenpolysiloxane as a crosslinking agent of the vinyl-containing organopolysiloxane and a platinum compound as a catalyst for promoting the addition reaction between the silicon-bonded vinyl groups and the silicon-bonded hydrogen atoms.
    • 提出了一种制备可固化的有机基聚硅氧烷组合物的新方法,该组合物适用于具有优异机械性能和用于复制成型的耐久性的模具制造材料。 该方法包括:(a)将含乙烯基的有机聚硅氧烷与疏水性增强二氧化硅填料和六甲基二硅氮烷共混,任选地,与水分别有限,(b)使共混物进行热处理,和(c)混合热 与有机氢聚硅氧烷作为含乙烯基的有机聚硅氧烷的交联剂和铂化合物作为促进硅键合的乙烯基和与硅键合的氢原子之间的加成反应的催化剂。
    • 73. 发明授权
    • Organopolysiloxane composition
    • 有机聚硅氧烷组合物
    • US4886865A
    • 1989-12-12
    • US169849
    • 1988-03-18
    • Masayuki IkenoHironao FujikiHiroshi Inomata
    • Masayuki IkenoHironao FujikiHiroshi Inomata
    • C08G77/50C08L83/05C08L83/07C08L83/14
    • C08G77/50C08L83/14
    • The organopolysiloxane composition is useful as a potting or encapsulating material having a gel-like consistency for protecting electronic components even at an extremely low temperature as is encountered in the space industry. The composition is basically of the type in which crosslinks are formed by the addition reaction between silicon-bonded vinyl groups in an organopolysiloxane and silicon-bonded hydrogen atoms in an organohydrogenpolysiloxane but the outstanding cold resistance of the gel-like material obtained from the composition is imparted by incorporating specific silethylene-containing units of the unit formula OSiMe--CH.sub.2 CH.sub.2 --SiMe.sub.2 O.sub.0.5 into the organopolysiloxane in a specified molar content.
    • 有机聚硅氧烷组合物可用作具有凝胶状稠度的灌封或封装材料,即使在空间工业中遇到的极低温下也能保护电子元件。 组合物基本上是通过有机聚硅氧烷中与硅键合的乙烯基与有机氢聚硅氧烷中与硅键合的氢原子之间的加成反应形成交联的类型,但由组合物获得的凝胶状材料的出色的耐寒性为 通过将单元式OSiMe-CH 2 CH 2 -SiMe 2 O 0.5的特定的含有亚乙烯基的单元以特定的摩尔含量加入有机聚硅氧烷中。