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    • 6. 发明申请
    • SILYLATED POLYURETHANE/POLYORGANOSILOXANE BLEND AND SEALANT COMPOSITION AND FUMED SILICA COMPOSITION CONTAING SAME
    • 苯乙烯聚氨酯/聚硅氧烷共混物和密封剂组合物和含有相同的二氧化硅组合物
    • WO2011123355A1
    • 2011-10-06
    • PCT/US2011/029963
    • 2011-03-25
    • MOMENTIVE PERFORMANCE MATERIALS INC.RAMAKRISHNAN, IndumathiLANDON, Shayne, J.WILLIAMS, David, A.
    • RAMAKRISHNAN, IndumathiLANDON, Shayne, J.WILLIAMS, David, A.
    • C08F283/02
    • C08L83/04C08G18/837C08G77/16C08G77/18C08G2190/00C08L75/04C08L83/06
    • There is provided herein a composition comprising: (A) a silanol and/orhydrocarbon-terminated polyorganosiloxane in an amount of from about 30 weight percent to about 90 weight percent; and, (B) a moisture curable silylated polyurethane resin in an amount of from about 10 weight percent to about 70 weight percent. There is also provided herein in another embodiment a two part sealant composition wherein the first part comprises: (A) a silanol and/or hydrocarbon-terminated polyorganosiloxane in an amount of from about 15 weight percent to about 60 weight percent, (B) a moisture curable silylated polyurethane resin in an amount of from about 2 weight percent to about 32 weight percent, and (C) a filler, said weight percents being based on the weight of the first part. In addition, there is provided herein a fumed silica composition comprising: (A) a silanol and/or hydrocarbon-terminated polyorganosiloxane in an amount of from about 20 weight percent to about 62 weight percent; (B) a moisture curable silylated polyurethane resin in an amount of from about 8 weight percent to about 38 weight percent; and, (C) a treated fumed silica in an amount of from about 5 to about 10 weight percent.
    • 本文提供的组合物包含:(A)约30重量%至约90重量%的硅烷醇和/或烃封端的聚有机硅氧烷; 和(B)可湿固化的甲硅烷基化聚氨酯树脂,其量为约10重量%至约70重量%。 在另一个实施方案中还提供了两部分密封剂组合物,其中第一部分包括:(A)约15重量%至约60重量%的量的硅烷醇和/或烃封端的聚有机基硅氧烷,(B) 湿度可固化的甲硅烷基化聚氨酯树脂,其量为约2重量%至约32重量%,和(C)填料,所述重量百分比基于第一部分的重量。 此外,本文提供了一种热解法二氧化硅组合物,其包含:(A)约20重量%至约62重量%的硅烷醇和/或烃封端的聚有机硅氧烷; (B)水分可固化的甲硅烷基化聚氨酯树脂,其量为约8重量%至约38重量%; 和(C)处理的热解法二氧化硅的量为约5至约10重量%。