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48 条记录 (耗时 0.019 秒)

    Nanosized copper catalyst precursors for the direct synthesis of trialkoxysilanes
    11.
    发明申请
    Nanosized copper catalyst precursors for the direct synthesis of trialkoxysilanes 有权
    用于直接合成三烷氧基硅烷的纳米铜催化剂前体

    公开(公告)号：US20080103323A1

    公开(公告)日：2008-05-01

    申请号：US11804952

    申请日：2007-05-21

    申请人： Sabrina R. Cromer ,  Regina Nelson Eng ,  Kenrick M. Lewis ,  Abellard T. Merelgh ,  Chi-Lin O'Young ,  Hua Yu

    发明人： Sabrina R. Cromer ,  Regina Nelson Eng ,  Kenrick M. Lewis ,  Abellard T. Merelgh ,  Chi-Lin O'Young ,  Hua Yu

    IPC分类号： C07F7/02

    CPC分类号： C07F7/025 ,  B01J23/72

    摘要： The present invention provides a process for using nanosized copper, nanosized copper oxides, nanosized copper chlorides, other nanosized copper salts, and mixtures thereof, as sources of catalytic copper in the Direct Synthesis of trialkoxysilanes of the formula HSi(OR)3 wherein R is an alkyl group containing from 1 to 6 carbon atoms inclusive. The nanosized copper, nanosized copper oxides, nanosized copper chlorides, other nanosized copper salts, and their mixtures of this invention have average particle sizes that are in the range from about 0.1 to about 60 nanometers, preferably from about 0.1 to about 30 nanometers, and most preferably from about 0.1 to about 15 nanometers. Nanosized sources of catalytic copper afford high dispersion of catalytic sites on silicon and contribute to high reaction rates, high selectivity and high silicon conversion. The nanosized copper catalyst precursors of the invention permit the use of substantially reduced levels of copper compared to conventional practice.

    摘要翻译： 本发明提供了在式HSi（OR）3的三烷氧基硅烷的直接合成中使用纳米尺寸铜，纳米尺寸铜氧化物，纳米尺寸氯化铜，其它纳米铜盐及其混合物作为催化铜的来源的方法 其中R是包含1至6个碳原子的烷基。 本发明的纳米尺寸的铜，纳米尺寸的氧化铜，纳米尺寸的氯化铜，其他的纳米级铜盐及其混合物的平均粒度范围为约0.1至约60纳米，优选为约0.1至约30纳米， 最优选约0.1至约15纳米。 催化铜的纳米化来源提供了硅上催化位点的高分散性，有助于高反应速率，高选择性和高硅转化率。 与常规实践相比，本发明的纳米尺寸铜催化剂前体允许使用显着降低的铜含量。

    Siloxane-polyether copolymers with unsaturated functionalities, and process for making them
    14.
    发明授权
    Siloxane-polyether copolymers with unsaturated functionalities, and process for making them 失效
    具有不饱和官能团的硅氧烷 - 聚醚共聚物及其制备方法

    公开(公告)号：US6103847A

    公开(公告)日：2000-08-15

    申请号：US82563

    申请日：1998-05-21

    申请人： Kenrick M. Lewis ,  Hua Yu

    发明人： Kenrick M. Lewis ,  Hua Yu

    IPC分类号： C07F7/08 ,  C08G77/10 ,  C08G77/20 ,  C08G77/46 ,  C08G77/06

    CPC分类号： C08G77/10 ,  C08G77/46

    摘要： This invention discloses hydrophilic additives in polysiloxane gels, elastomers and coatings, and novel processes for producing them. The process comprises:(a) redistributing into polysiloxane-polyether copolymers an unsaturated silane or siloxane,(b) adding to the mixture of reagents a catalytically effective amount of a basic catalyst; and(c) heating the reaction mixture to effect reaction.Novel siloxane structures of unsaturated aliphatic modified polyerther siloxane copolymers are also taught.

    摘要翻译： 本发明公开了聚硅氧烷凝胶，弹性体和涂料中的亲水性添加剂及其生产方法。 该方法包括：（a）将聚硅氧烷 - 聚醚共聚物重新分配成不饱和硅烷或硅氧烷，（b）向试剂混合物中加入催化有效量的碱性催化剂; 和（c）加热反应混合物进行反应。 还教导了不饱和脂族改性聚醚醚硅氧烷共聚物的新型硅氧烷结构。

    Vapor phase alcoholysis of aminosilanes and carbamatosilanes
    15.
    发明授权
    Vapor phase alcoholysis of aminosilanes and carbamatosilanes 失效
    氨基硅烷和氨基甲酰硅烷的气相醇解

    公开(公告)号：US4730074A

    公开(公告)日：1988-03-08

    申请号：US948036

    申请日：1986-12-31

    申请人： Kenrick M. Lewis ,  Frank D. Mendicino ,  Nan S. Chu

    发明人： Kenrick M. Lewis ,  Frank D. Mendicino ,  Nan S. Chu

    IPC分类号： C07F7/04 ,  C07B61/00 ,  C07F7/18

    CPC分类号： C07F7/188

    摘要： A vapor phase process for the synthesis of alkoxysilanes of the general formula HSi(OR'").sub.x (R").sub.3-x which comprises reacting(a) a silane of the general formulaHSi(NRR').sub.x (R").sub.3-x wherein R, R' and R" are individually hydrogen or an aryl or alkyl group optionally containing unsaturation, each having from one to eight carbon atoms inclusive, and where R' may also be an alkoxy or carbamato group and where x has a value of from one to three; with(b) an alcohol of the general formulaR'"OH wherein R'" is an aryl group, or an alkyl group optionally containing unsaturation, each having from one to twenty carbon atoms inclusive and optionally substituted said reaction taking place in the presence of(c) a catalystin which both the silane and the alcohol are present in gaseous form in a stoichiometric ratio of 0.4 to 1.05 moles of alcohol per mole of silicon-nitrogen bonds and where said catalyst is present in an amount from 0.01 to 10 mole percent of the silicon-nitrogen bonds.

    Direct process for preparing dimethylsiloxanes
    17.
    发明授权
    Direct process for preparing dimethylsiloxanes 失效
    制备二甲基硅氧烷的直接方法

    公开(公告)号：US4593114A

    公开(公告)日：1986-06-03

    申请号：US739124

    申请日：1985-05-29

    申请人： Kenrick M. Lewis ,  Bernard Kanner

    发明人： Kenrick M. Lewis ,  Bernard Kanner

    IPC分类号： C07F7/08 ,  C07F7/16 ,  C07F7/18 ,  C07F7/21

    CPC分类号： C07F7/16 ,  C07F7/0874 ,  C07F7/1804 ,  C07F7/21

    摘要： A process is disclosed for the direct synthesis of cyclic and oligomeric organosiloxanes, such as dimethylsiloxanes, comprising reacting a hydrocarbon ether and a hydrocarbon halide with a fluidized or agitated bed of activated silicon particles with a maximum contact time of five minutes, and continuously withdrawing products from that reaction.

    摘要翻译： 公开了用于直接合成环状和低聚有机硅氧烷（例如二甲基硅氧烷）的方法，包括使烃醚和卤化烃与活化硅颗粒的流化床或搅拌床反应，最大接触时间为5分钟，并连续抽出产物 从那个反应。