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    • 6. 发明申请
    • OIL RESISTANT COMPOSITIONS
    • 耐油组合物
    • WO0027910A8
    • 2000-08-31
    • PCT/US9925622
    • 1999-11-02
    • LOCTITE CORPDECATO ALFRED ABENNINGTON LESTER D
    • DECATO ALFRED ABENNINGTON LESTER D
    • C08K3/22C08K3/26B05D3/02
    • C08K3/22C08K3/26Y10T428/31663C08L83/04
    • The present invention provides silicone compositions, cured elastomers thereof demonstrate improved resistance to oil. The compositions include a reactive silicone component, wherein the silicone component cures by way of an addition cure mechanism or a condensation cure mechanism; and a basic filler component to confer oil resistance to the cured elastomer. Where the reactive silicone component cures by way of an addition cure mechanism, an addition cure catalyst is also included. To that end, in one embodiment of the invention, the composition includes a vinyl-terminated silicone fluid, a hydrogen-functionalized silicone fluid; a basic filler to confer oil resistance to the cured elastomer and an addition cure catalyst. In another embodiment of the invention, the composition includes a hydroxy-terminated diorganopolysiloxane, a precipitated calcium carbonate, at least about 5 % by weight of a composition comprising magnesium oxide particles having a mean particle size of about 0.5 mu M to about 1.5 mu M and a mean surface area of about 50 M /g to about 175 M /g and a crosslinker.
    • 本发明提供了硅氧烷组合物,其固化的弹性体显示出改进的耐油性。 组合物包括反应性硅氧烷组分,其中硅氧烷组分通过加成固化机理或缩合固化机理固化; 以及赋予固化弹性体耐油性的基本填料组分。 当反应性硅氧烷组分通过加成固化机理固化时,还包括加成固化催化剂。 为此,在本发明的一个实施方案中,组合物包括乙烯基封端的硅氧烷流体,氢官能化的硅氧烷流体; 赋予固化弹性体耐油性的基本填料和加成固化催化剂。 在本发明的另一个实施方案中,组合物包括羟基封端的二有机聚硅氧烷,沉淀碳酸钙,至少约5重量%的包含平均粒径为约0.5μm至约1.5μm的氧化镁颗粒的组合物 平均表面积为约50M 2 / g至约175M 2 / g和交联剂。