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119 条记录 (耗时 0.028 秒)

    Process for the preparation of SiOC-linked, linear polydimethylsiloxane-polyoxyalkylene block copolymers and their use
    4.
    发明授权
    Process for the preparation of SiOC-linked, linear polydimethylsiloxane-polyoxyalkylene block copolymers and their use 有权
    用于制备SiOC连接的线性聚二甲基硅氧烷 - 聚氧化烯嵌段共聚物的方法及其用途

    公开(公告)号：US07825205B2

    公开(公告)日：2010-11-02

    申请号：US11956423

    申请日：2007-12-14

    申请人： Wilfried Knott ,  Juergen Droese ,  Klaus Dieter Klein ,  Rüdiger Landers ,  Dagmar Windbiel

    发明人： Wilfried Knott ,  Juergen Droese ,  Klaus Dieter Klein ,  Rüdiger Landers ,  Dagmar Windbiel

    IPC分类号： C08G77/46

    CPC分类号： C08G77/46 ,  C08G18/48 ,  C08G77/12 ,  C08G2101/0083

    摘要： The invention relates to a process for the preparation of SiOC-linked, linear polydimethylsiloxane-polyoxyalkylene block copolymers having (AB) repeat units, via reaction by methods known per se of polyetherdiols with a stoichiometric excess of α,ω-dihydropolydimethylsiloxanes, in the presence of one or more compounds of elements of main group 13 and/or of transition group 3 as catalyst, which comprises, after completed reaction of the alcohol component, continuing the reaction until no remaining ≡Si(H) groups are detectable by a gas-volumetric method, and also to the compounds thus prepared, and to their use as surfactant additives for the production of polyurethane ether foams.

    摘要翻译： 本发明涉及一种制备具有（AB）重复单元的SiOC连接的线性聚二甲基硅氧烷 - 聚氧化烯嵌段共聚物的方法，其通过本身已知的聚醚二醇与化学计量过量的α，ω-二氢聚二甲基硅氧烷的反应，在存在下 的主要组分13和/或过渡组3的元素的一种或多种化合物作为催化剂，其包括在醇组分完全反应之后继续反应，直到没有剩余的≡Si（H）基团可被气 - 体积法，以及由此制备的化合物，以及它们作为用于生产聚氨酯醚泡沫的表面活性剂添加剂的用途。

    Silanes with hydrophilic groups, their synthesis and use as surfactants in aqueous media
    9.
    发明授权
    Silanes with hydrophilic groups, their synthesis and use as surfactants in aqueous media 失效
    具有亲水基团的硅烷，它们的合成和用作水性介质中的表面活性剂

    公开(公告)号：US06489498B2

    公开(公告)日：2002-12-03

    申请号：US09818419

    申请日：2001-03-27

    申请人： Klaus-Dieter Klein ,  Wilfried Knott ,  Götz Koerner ,  Manfred Krakenberg

    发明人： Klaus-Dieter Klein ,  Wilfried Knott ,  Götz Koerner ,  Manfred Krakenberg

    IPC分类号： C07F708

    CPC分类号： B01F17/0071 ,  C07F7/081

    摘要： Silanes of the general formula are prepared, wherein R1, R2 and R3 in the molecule are the same or different and represent aliphatic or aromatic hydrocarbon groups, R4 is a divalent hydrocarbon group with 4 to 12 carbon atoms and a lateral hydroxyl group, wherein the hydrocarbon group can be interrupted by an ether oxygen, R5 is a hydrophilic, ionic group. A method for synthesizing these compounds is described. The silanes greatly lower the surface tension of aqueous solutions, the surface tension being reduced to values of about 23 mN/m. The silanes are biologically degradable and have pronounced surfactant properties.

    摘要翻译： 制备通式的硅烷，其中分子中的R 1，R 2和R 3相同或不同并且表示脂族或芳族烃基，R 4是具有4至12个碳原子和侧羟基的二价烃基，其中烃 组可以被醚氧中断，R5是亲水的离子基团。 对这些化合物的合成方法进行说明。 硅烷大大降低了水溶液的表面张力，表面张力降低到约23mN / m。 硅烷是生物可降解的并且具有显着的表面活性剂性质。