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    Method of Making Branched Polysilane Copolymers
    3.
    发明申请
    Method of Making Branched Polysilane Copolymers 审中-公开
    支链聚硅烷共聚物的制备方法

    公开(公告)号：US20090124781A1

    公开(公告)日：2009-05-14

    申请号：US11884611

    申请日：2006-03-29

    申请人： Travis Hein ,  Russell King ,  Binh Thanh Nguyen ,  Herschel Henry Reese ,  Michael Andrew Smith ,  Hanh Xuan Vo

    发明人： Travis Hein ,  Russell King ,  Binh Thanh Nguyen ,  Herschel Henry Reese ,  Michael Andrew Smith ,  Hanh Xuan Vo

    IPC分类号： C08G77/00

    CPC分类号： C08G77/60

    摘要： Branched polysilane copolymers are prepared via a Wurtz-type coupling reaction by reacting a mixture of two different dihalosilanes and a single trihalosilane with an alkali metal coupling agent in an organic liquid medium. The branched polysilane copolymers are recovered from the reaction mixture. Capped branched polysilane copolymers are prepared via the same Wurtz-type coupling reaction with addition of a capping agent to the reaction mixture. The capping agent is a monohalosilane, monoalkoxysilane, dialkoxysilane, or trialkoxysilane. The branched polysilane copolymers and the capped branched polysilane copolymers are soluble in organic liquid medium.

    摘要翻译： 支化聚硅烷共聚物是通过Wurtz型偶合反应制备的，通过使两种不同的二卤代硅烷和单一的三卤代硅烷的混合物与碱金属偶联剂在有机液体介质中反应。 从反应混合物中回收支化聚硅烷共聚物。 通过在反应混合物中加入封端剂通过相同的Wurtz型偶联反应制备包覆的支化聚硅烷共聚物。 封端剂是单卤硅烷，单烷氧基硅烷，二烷氧基硅烷或三烷氧基硅烷。 支化聚硅烷共聚物和封端的支化聚硅烷共聚物可溶于有机液体介质。

    Process for making powdered base for formulating curable liquid silicone rubber compositions
    6.
    发明授权
    Process for making powdered base for formulating curable liquid silicone rubber compositions 失效
    制备可固化液体硅橡胶组合物的粉底的方法

    公开(公告)号：US6130272A

    公开(公告)日：2000-10-10

    申请号：US181978

    申请日：1998-10-29

    申请人： Steven F. Dopp ,  Phillip Joseph Griffith ,  Jary David Jensen ,  Herschel Henry Reese

    发明人： Steven F. Dopp ,  Phillip Joseph Griffith ,  Jary David Jensen ,  Herschel Henry Reese

    IPC分类号： C08L83/04 ,  C08K9/06 ,  C09C1/28 ,  C09C3/12

    CPC分类号： C08K9/06

    摘要： A process for making a flowable powdered base suitable for use in the formulation of liquid silicone rubber compositions that can be cured to form silicone elastomers. The process comprises (A) fluidizing a reinforcing silica filler in a high-shear mixer, (B) maintaining the content of the mixer at a temperature below about 60.degree. C. while adding to the mixer a silylating agent, a nitrogen containing compound to facilitate the silylation reaction, and water thereby forming an essentially homogeneous mixture comprising a treated reinforcing silica filler; (C) adding a polydiorganosiloxane having a viscosity of about 0.03 to 300 Pa.s at 25.degree. C. to the mixer and forming a flowable powdered base having an average particle size of from about 1 to 1000 microns, and (D) heating the flowable powdered base under conditions sufficient to remove volatiles.

    摘要翻译： 制备可流动的粉末状碱的方法，其适用于可固化形成硅氧烷弹性体的液体硅橡胶组合物的配方。 该方法包括（A）在高剪切混合器中使增强二氧化硅填料流化，（B）将混合器的含量保持在低于约60℃的温度，同时向混合器中加入甲硅烷基化试剂，含氮化合物 促进甲硅烷基化反应和水，从而形成包含经处理的增强二氧化硅填料的基本均匀的混合物; （C）在25℃下向粘合剂中加入粘度为约0.03至300Pa.s的聚二有机硅氧烷，并形成平均粒度为约1-1000微米的可流动粉末状基质，和（D）加热 可流动的粉状基质在足以除去挥发物的条件下。