利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

45 条记录 (耗时 0.016 秒)

    Organic silicon compounds and method for making
    41.
    发明授权
    Organic silicon compounds and method for making 失效
    有机硅化合物及其制备方法

    公开(公告)号：US5233068A

    公开(公告)日：1993-08-03

    申请号：US978543

    申请日：1992-11-19

    申请人： Motoo Fukushima ,  Shigeru Mori

    发明人： Motoo Fukushima ,  Shigeru Mori

    IPC分类号： C07F7/08 ,  C07F7/21

    CPC分类号： C07F7/0841 ,  C07F7/21

    摘要： Novel cyclic organic silicon compounds of formula (1) can be synthesized in high yields and high purity by reacting a dichlorosilane of formula (3) with a cyclotrisiloxane of formula (4) in an aprotic polar solvent to form an .alpha.,.omega.-dichlorosiloxane of formula (2), and reacting the .alpha.,.omega.-dichlorosiloxane with an alkali metal according to the following reaction scheme. ##STR1##

    摘要翻译： 式（1）的新型环状有机硅化合物可以通过在非质子传递极性溶剂中使式（3）的二氯硅烷与式（4）的环三硅氧烷反应，以高产率和高纯度合成，形成α，ω-二氯硅氧烷 式（2）的化合物，并使α，ω-二氯硅氧烷与碱金属反应。 + TR

    Preparation of polyorganosilanes
    42.
    发明授权
    Preparation of polyorganosilanes 失效
    聚有机硅烷的制备

    公开(公告)号：US5159043A

    公开(公告)日：1992-10-27

    申请号：US812279

    申请日：1991-12-23

    申请人： Shigeru Mori ,  Eiichi Tabei ,  Motoo Fukushima ,  Yoshinori Hida

    发明人： Shigeru Mori ,  Eiichi Tabei ,  Motoo Fukushima ,  Yoshinori Hida

    IPC分类号： C08G77/48 ,  C08G77/60

    CPC分类号： C08G77/60

    摘要： Polyorganosilanes are prepared through contact reaction of an organodihalosilane with alkali metal fine particles dispersed in an organic solvent. the reaction solution is adjusted to an acidity of pH 3 to 7 before or after the step of deactivating the excess alkali metal in the reaction solution. The alkali metal halide is removed from the reaction solution by dissolving it in water. Formation of insoluble components is minimized.

    摘要翻译： 聚有机硅烷通过有机二卤硅烷与分散在有机溶剂中的碱金属微粒的接触反应制备。 在使反应溶液中过量的碱金属失活的步骤之前或之后将反应溶液调节至pH 3至7的酸度。 将碱金属卤化物溶解在水中从反应溶液中除去。 不溶性组分的形成最小化。

    Fluorosilicone rubber composition
    44.
    发明授权
    Fluorosilicone rubber composition 失效
    氟硅橡胶组合物

    公开(公告)号：US5059668A

    公开(公告)日：1991-10-22

    申请号：US580199

    申请日：1990-09-10

    申请人： Takeshi Fukuda ,  Motoo Fukushima

    发明人： Takeshi Fukuda ,  Motoo Fukushima

    IPC分类号： C08G77/24 ,  C08K5/14 ,  C08L83/08 ,  C08G77/06

    CPC分类号： C08K5/14 ,  C08G77/24 ,  C08L83/08

    摘要： The fluorine-substituted organopolysiloxane as the principal ingredient of the inventive silicone rubber composition has vinyl groups to serve as the crosslinking points at the molecular chain terminals while at least the penultimate siloxane unit or the silicon atom adjacent to the terminal silicon atom has no fluorine-substituted hydrocarbon group bonded to the silicon atom. Being freed from the steric hindrance due to the bulky fluorine-substituted hydrocarbon group bonded to the adjacent silicon atom, the vinyl group bonded to the terminal silicon atom can pertain to the crosslinking reaction much easier than otherwise so that the silicone rubber composition of the invention containing an organic peroxide or a combination of an organohydrogenpolysiloxane and a platinum catalyst as a curing agent can be rapidly cured to give a cured silicone rubber article having excellent resistance against oils and organic solvents as well as mechanical properties.

    摘要翻译： 作为本发明的硅橡胶组合物的主要成分的氟取代的有机聚硅氧烷具有乙烯基作为分子链末端的交联点，而至少倒数第二硅氧烷单元或与末端硅原子相邻的硅原子不含氟 - 与硅原子键合的取代烃基。 由于与相邻的硅原子键合的大的含氟取代的烃基而排除空间位阻，与末端硅原子键合的乙烯基可以与其它交联反应容易得多，因此本发明的硅橡胶组合物 含有有机过氧化物或有机氢聚硅氧烷和铂催化剂的组合作为固化剂可以快速固化，得到具有优异的耐油性和有机溶剂性能的固化硅橡胶制品以及机械性能。