Catalyzed redistribution of polyorganosiloxanes
    11.
    发明公开
    Catalyzed redistribution of polyorganosiloxanes 失效
    KatalysierteÄquilibrierungvon Polyorganosiloxanen。

    公开(公告)号:EP0484959A2

    公开(公告)日:1992-05-13

    申请号:EP91119057.7

    申请日:1991-11-08

    IPC分类号: C08G77/10 C08G77/08 C07F7/08

    摘要: The instant invention is a catalyzed process for the redistribution of linear, chloride or hydroxy end-terminated polyorganosiloxanes or cyclic polyorganosiloxanes. Effective catalysts for the described process are alumina, silica-alumina, activated carbon, zeolite and acid clay. The catalyzed redistribution process can be incorporated as an element of a three-stage process. The three-stage process allows control of the yield of cyclic polyorganosiloxanes.

    摘要翻译: 本发明是用于重新分配线性,氯化物或羟基封端的聚有机硅氧烷或环状聚有机硅氧烷的催化方法。 用于所述方法的有效催化剂是氧化铝,二氧化硅 - 氧化铝,活性炭,沸石和酸性粘土。 催化再分配过程可以作为三阶段过程的一个要素加入。 三步法可以控制环状聚有机硅氧烷的产率。

    Process for converting polymeric silicon containing compounds to monosilanes
    12.
    发明公开
    Process for converting polymeric silicon containing compounds to monosilanes 有权
    一种用于容纳化合物的甲硅烷类聚合硅的转换过程

    公开(公告)号:EP0992504A3

    公开(公告)日:2002-01-16

    申请号:EP99119361.6

    申请日:1999-09-29

    IPC分类号: C07F7/12

    CPC分类号: C07F7/128

    摘要: A process for converting a high-boiling fraction, resulting from the reaction of methyl chloride with silicon metalloid in a process typically referred to as the "direct process", to monosilanes. Said process comprises forming a mixture comprising a low-boiling fraction comprising monosilanes and a high-boiling fraction comprising polymeric silicon containing compounds and contacting the mixture with hydrogen gas in the presence of a catalyst effective in promoting conversion of the polymeric silicon containing compounds to monosilanes. The process results in conversion of the high-boiling fraction to monosilanes. At least a portion of the catalyst present may be formed in situ during conduct of the direct process and isolation of the fractions.

    Process for converting polymeric silicon containing compounds to monosilanes
    14.
    发明公开
    Process for converting polymeric silicon containing compounds to monosilanes 有权
    一种用于容纳化合物的甲硅烷类聚合硅的转换过程

    公开(公告)号:EP0992504A2

    公开(公告)日:2000-04-12

    申请号:EP99119361.6

    申请日:1999-09-29

    IPC分类号: C07F7/12

    CPC分类号: C07F7/128

    摘要: A process for converting a high-boiling fraction, resulting from the reaction of methyl chloride with silicon metalloid in a process typically referred to as the "direct process", to monosilanes. Said process comprises forming a mixture comprising a low-boiling fraction comprising monosilanes and a high-boiling fraction comprising polymeric silicon containing compounds and contacting the mixture with hydrogen gas in the presence of a catalyst effective in promoting conversion of the polymeric silicon containing compounds to monosilanes. The process results in conversion of the high-boiling fraction to monosilanes. At least a portion of the catalyst present may be formed in situ during conduct of the direct process and isolation of the fractions.

    Hydrochlorination process for converting high-boiling residue from direct process to monosilanes
    15.
    发明公开
    Hydrochlorination process for converting high-boiling residue from direct process to monosilanes 失效
    将所述直接合成的高沸点残余物的氢氯化

    公开(公告)号:EP0829484A3

    公开(公告)日:1999-09-01

    申请号:EP97114649.3

    申请日:1997-08-23

    IPC分类号: C07F7/12

    CPC分类号: C07F7/16 C07F7/125 C07F7/128

    摘要: A hydrochlorination process is claimed herein for production of monosilanes from the high-boiling residue obtainable from the reaction of organochlorides with silicon in a process known as the "direct process". Our process comprises (A) forming a mixture of said high-boiling residue and an organosilane and (B) contacting said mixture with hydrogen chloride in the presence of a catalytic amount of a catalyst composition effective in the formation of monosilanes from said high-boiling residue. A preferred catalyst composition comprises aluminum trichloride, at least a portion of which may be formed, in situ , during conduct of the direct process and isolation of said high-boiling residue.

    Process for the preparation of alkylhalosilanes
    20.
    发明公开
    Process for the preparation of alkylhalosilanes 有权
    一种制备烷基卤硅烷工艺

    公开(公告)号:EP0937731A3

    公开(公告)日:2000-11-22

    申请号:EP99103077.6

    申请日:1999-02-17

    IPC分类号: C07F7/16

    CPC分类号: C07F7/16

    摘要: A process is claimed for the use of water granulated silicon in the manufacture of alkylhalosilanes. In said process, an alkyl halide, described by formula RX, is contacted with a water granulated silicon particulate containing greater than 0.5 to 5.0 weight percent iron and greater than 0.05 to 0.3 weight percent titanium, in the presence of a catalyst composition comprising copper and at a temperature of 250 to 350°C., wherein R is selected from alkyls having one to four carbon atoms and X is a halogen atom.