High strength, extrudable silicone elastomer compositions
    1.
    发明授权
    High strength, extrudable silicone elastomer compositions 失效
    高强度,可挤出的硅橡胶组合物

    公开(公告)号:US4162243A

    公开(公告)日:1979-07-24

    申请号:US904176

    申请日:1978-05-08

    IPC分类号: C08L83/00 C08L83/04 C08L83/07

    摘要: A composition curable to a silicone elastomer is prepared by mixing a triorganosiloxy endblocked polydimethylsiloxane fluid where the triorganosiloxy is dimethylvinylsiloxy or methylphenylvinylsiloxy, a reinforcing silica having a surface treated organosiloxane groups which contain 0.05 to 0.32 percent by weight vinyl, a fluid organohydrogensiloxane, a platinum catalyst and optionally a platinum catalyst inhibitor. The polydimethylsiloxane fluid has a major peak molecular weight of 68,000 to 135,000, a dispersity index greater than 3.8, the lowest molecular weight species between 854 and 3146 and the highest molecular weight species between 174,000 and 370,000. These compositions are readily extrudable under low pressure and cure to high strength elastomers with a high durometer.

    摘要翻译: 通过混合三有机甲硅烷氧基封端的聚二甲基硅氧烷流体,其中三有机甲硅烷氧基是二甲基乙烯基甲硅烷氧基或甲基苯基乙烯基甲硅烷氧基,具有表面处理的有机硅氧烷基团的增强二氧化硅,其含有0.05至0.32重量%的乙烯基,流动有机氢硅氧烷,铂催化剂 和任选的铂催化剂抑制剂。 聚二甲基硅氧烷流体的主峰分子量为68,000至135,000,分散指数大于3.8,最低分子量物种在854和3146之间,最高分子量物种在174,000和370,000之间。 这些组合物在低压下易于挤出并固化成具有高硬度的高强度弹性体。

    Low temperature polymethylsiloxane containing silicon-bonded hydrogen
and curable compositions made therewith
    2.
    发明授权
    Low temperature polymethylsiloxane containing silicon-bonded hydrogen and curable compositions made therewith 失效
    含有硅键合氢的低温聚甲基硅氧烷和由其制成的可固化组合物

    公开(公告)号:US4613659A

    公开(公告)日:1986-09-23

    申请号:US809455

    申请日:1985-12-16

    CPC分类号: C08G77/12

    摘要: Polymethylsiloxanes containing silicon-bonded hydrogen exhibit low temperature properties and can be made into gels with which also exhibit low temperature properties or into elastomeric materials. The polymethylsiloxanes have 84 to 96 mole percent dimethylsiloxane units, 0.5 to 6 mole percent trimethylsiloxy units, 2 to 10 mole percent methylsilsesquioxane units, and 0.25 to 3 mole percent monohydrogendimethylsiloxy units and the total mole percent of the trimethylsiloxy units and the monohydrogendimethylsiloxy units is at least 1.5.

    摘要翻译: 含有硅键合氢的聚甲基硅氧烷具有低温性能,并且可以制成也具有低温性能的凝胶或弹性材料。 聚甲基硅氧烷具有84至96摩尔%的二甲基硅氧烷单元,0.5至6摩尔%的三甲基甲硅烷氧基单元,2至10摩尔%的甲基硅倍半氧烷单元和0.25至3摩尔%的单氢化二甲基甲硅烷氧基单元,并且三甲基甲硅烷氧基单元和单氢羟基二甲基甲硅烷氧基单元的总摩尔百分数为 至少1.5。

    Foamable polyorganosiloxane compositions
    5.
    发明授权
    Foamable polyorganosiloxane compositions 失效
    可发泡聚有机硅氧烷组合物

    公开(公告)号:US4555529A

    公开(公告)日:1985-11-26

    申请号:US747217

    申请日:1985-06-21

    IPC分类号: C08J9/14 C08L83/04

    摘要: Polyorganosiloxane foams are prepared by the volatilization of a blowing agent within a polyorganosiloxane composition that is curable by a hydrosilation reaction and includes as a foam stabilizer a resinous polyorganosiloxane comprising trimethylsiloxy units, SiO.sub.4/2 units and a specified class of fluorine-containing siloxane units.

    摘要翻译: 聚有机硅氧烷泡沫体是通过在聚有机硅氧烷组合物中挥发的可制备的聚有机硅氧烷组合物,其通过硅氢化反应可固化,并且包括作为泡沫稳定剂的包含三甲基甲硅烷氧基单元,SiO 4/2单元和特定类别的含氟硅氧烷单元的树脂状聚有机硅氧烷。

    Alkenyloxy silicon compositions
    8.
    发明授权
    Alkenyloxy silicon compositions 失效
    烯氧基硅组合物

    公开(公告)号:US4079037A

    公开(公告)日:1978-03-14

    申请号:US744905

    申请日:1976-11-26

    CPC分类号: C08G77/20 C08G77/045

    摘要: Organosilicon compositions comprising at least one silicon-bonded alkenyloxy radical, such as vinyldimethylcarbonoxy, are disclosed. These unsaturated organosilicon compositions are useful as partial or complete replacements for the analogous organosilicon compositions bearing the well-known silicon-bonded vinyl radical. In particular, vinyldimethylcarbinoxy-endblocked polydimethylsiloxane is useful as a component in an elastomeric composition which is cured with an organosilicon hydride.

    摘要翻译: 公开了包含至少一个硅键合的烯氧基的有机硅组合物,例如乙烯基二甲基羰氧基。 这些不饱和有机硅组合物可用作具有公知的硅键合的乙烯基的类似有机硅组合物的部分或完全替代物。 特别地,乙烯基二甲基咔啉基封端的聚二甲基硅氧烷可用作用有机硅化合物固化的弹性体组合物中的组分。

    Method of preparing a platinum catalyst inhibitor
    9.
    发明授权
    Method of preparing a platinum catalyst inhibitor 失效
    铂催化剂抑制剂的制备方法

    公开(公告)号:US3933880A

    公开(公告)日:1976-01-20

    申请号:US528961

    申请日:1974-12-02

    摘要: Continuously passing a mixture of an acetylenic alcohol and a siloxane compound having at least three silicon-bonded hydrogen atoms bonded to at least three different silicon atoms in the presence of a platinum catalyst through a heating means wherein the mixture is heated above 100.degree.C. and above the temperature at which the olefinic siloxane compound product is no longer an inhibitor for the reaction and wherein the reactants and products are maintained under sufficient pressure to keep the mixture in a liquid state at least until the mixture has passed through the heating means provides an olefinic siloxane compound which, below 100.degree.C, is an inhibitor for the reaction between the acetylenic alcohol, the siloxane compound having at least three silicon-bonded hydrogen atoms in the presence of platinum.

    摘要翻译: 在铂催化剂的存在下,通过加热装置连续通过具有至少三个与硅键合的氢原子至少三个与硅键合的氢原子键合的硅氧烷化合物的混合物,其中将混合物加热至100℃以上。 并且高于烯属硅氧烷化合物产物不再是反应的抑制剂的温度,并且其中反应物和产物保持在足够的压力下,以将混合物保持在液态至少直到混合物通过加热装置,提供 低于100℃的烯属硅氧烷化合物是在铂存在下具有至少三个与硅键合的氢原子的炔属醇之间的反应的抑制剂。

    Moisture cured one-part RTV silicone sealant
    10.
    发明授权
    Moisture cured one-part RTV silicone sealant 失效
    水分固化一部分RTV硅酮密封剂

    公开(公告)号:US4711928A

    公开(公告)日:1987-12-08

    申请号:US835578

    申请日:1986-03-03

    摘要: A method of producing a one-part silicone elastomeric sealant which has improved shelf life and an economical process of manufacture is disclosed. The method mixes a diorganovinylsiloxy endblocked polydiorganosiloxane, reinforcing filler, and a silazane. This reinforced base is then converted by reacting with a silane of the formulaH[SiR.sub.2 OSiR.sub.2 CH.sub.2 CH.sub.2 ].sub.b SiR.sub.a (OR").sub.3-awhere R is methyl, ethyl, propyl, phenyl or trifluoropropyl, R" is methyl or ethyl, a is 0 or 1, and b is 0 or 1 using a platinum catalyst. The result is a base containing an alkoxy functional polymer. This base is then mixed with alkoxy functional silane crosslinker and titanium catalyst to yield a composition which is stable in the absence of moisture for long periods of time in storage, but cures to an elastomer upon exposure to moisture. The improved shelf life is due to the presence of alkylene radicals between the penultimate silicon atom and the last silicon atom of the polymer.

    摘要翻译: 公开了一种制备具有改进的保质期和经济的制造方法的单组分硅酮弹性体密封剂的方法。 该方法混合二有机乙烯基甲硅烷氧基封端的聚二有机硅氧烷,增强填料和硅氮烷。 乙基,丙基,苯基或三氟丙基,R“是甲基或乙基,a是与式H [SiR 2 OSiR 2 CH 2 CH 2] bSiRa(OR”)3-a的硅烷反应, 0或1,b为0或1,使用铂催化剂。 结果是含有烷氧基官能聚合物的碱。 然后将该碱与烷氧基官能的硅烷交联剂和钛催化剂混合,以产生在不存在水分的情况下在长时间储存​​时稳定的组合物,但在暴露于水分时可固化至弹性体。 改良的保质期是由于在倒数第二硅原子和聚合物的最后硅原子之间存在亚烷基。