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公开(公告)号：US4162243A
公开(公告)日：1979-07-24
申请号：US904176
申请日：1978-05-08
申请人： Chi-Long Lee , Myron T. Maxson , Leo F. Stebleton
发明人： Chi-Long Lee , Myron T. Maxson , Leo F. Stebleton
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。
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2.发明授权
公开(公告)号：US4687829A
公开(公告)日：1987-08-18
申请号：US835579
申请日：1986-03-03
申请人： Roger G. Chaffee , Leo F. Stebleton
发明人： Roger G. Chaffee , Leo F. Stebleton
IPC分类号： C08L83/04 , C08K3/00 , C08K5/05 , C08K5/5415 , C08K5/5419 , C08L83/14 , C09K3/10 , C08G77/06
CPC分类号： C09K3/1018 , C08K5/5415 , C08L83/14 , Y10S528/901
摘要： An improved silicone elastomeric sealant composition is produced by mixing alkoxy functional polydiorganosiloxane having alkoxysilethylene ends with a combination of trifunctional or tetrafunctional silane crosslinker and defunctional silane chain extender. The sealant composition is stable upon storage in the absence of moisture, but cures to an elastomer upon exposure to moisture. The cured composition can be adjusted for the desired elongation by varying the ratio of crosslinker to chain extender, but there must be at least 50 mol percent of crosslinker in the composition to ensure that the composition cures to a non-tacky surface.
摘要翻译： 通过将具有烷氧基亚乙基端的烷氧基官能聚二有机硅氧烷与三官能或四官能硅烷交联剂和功能性硅烷扩链剂的组合混合来制备改进的有机硅弹性体密封剂组合物。 密封剂组合物在没有水分的情况下储存时是稳定的，但在暴露于水分时可固化成弹性体。 可以通过改变交联剂与扩链剂的比例来调节固化的组合物达到期望的伸长率，但组合物中必须含有至少50摩尔％的交联剂，以确保组合物固化成非粘性表面。
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公开(公告)号：US4780519A
公开(公告)日：1988-10-25
申请号：US129253
申请日：1987-12-07
申请人： John C. Saam , Leo F. Stebleton
发明人： John C. Saam , Leo F. Stebleton
摘要： During the polymerization of diorganocyclosiloxane, to produce a polymer for use in manufacturing silicone rubber, a small amount of --SiOH is formed. The amount of --SiOH present in the polymer can be controlled by controlling the water vapor pressure present in the reaction container during polymerization.
摘要翻译： 在二有机环硅氧烷的聚合期间，为了制造用于制造硅橡胶的聚合物，形成少量的-SiOH。 聚合物中存在的-SiOH的量可以通过控制聚合期间反应容器中存在的水蒸气压来控制。
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公开(公告)号：US4719276A
公开(公告)日：1988-01-12
申请号：US923468
申请日：1986-10-27
申请人： Leo F. Stebleton
发明人： Leo F. Stebleton
CPC分类号： C08G77/32
摘要： A high molecular weight polydiorganosiloxane, produced by the alkaline catalysis of dialkylcyclotetrasiloxane, has a lower --SiOH content when the catalyst is neutralized with a composition of the formula R'.sub.3 SiOC(O)R" where R' is a hydrocarbon radical of from 1 to 6 carbon atoms inclusive and R" is a hydrocarbon radical of from 1 to 8 carbon atoms inclusive.
摘要翻译： 当催化剂用式R'3SiOC（O）R“的组合物中和时，通过二烷基环四硅氧烷的碱性催化产生的高分子量聚二有机硅氧烷具有较低的-SiOH含量，其中R'为1的烃基 至6个碳原子，R“是含有1至8个碳原子的烃基。
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