Preparation of high molecular weight organopolysiloxane
    42.
    发明授权
    Preparation of high molecular weight organopolysiloxane 失效
    高分子量有机聚硅氧烷的制备

    公开(公告)号:US5227447A

    公开(公告)日:1993-07-13

    申请号:US925194

    申请日:1992-08-06

    IPC分类号: C08G77/08

    CPC分类号: C08G77/08

    摘要: The process for preparing a high molecular weight organopolysiloxane comprises subjecting a hydroxyl-containing organosiloxane, as a starting material, to a dehydration condensation reaction in the presence of an acidic compound selected from the acidic compounds represented by the following general formulas (1) and (2): ##STR1## wherein in the formulas n is an integer of from 1 to 10, k is an integer of from 0 to 8, and 1 and m are each an integer of 0 or above, with 1+m being in the range from 1 to 10. The process is advantageous over the conventional methods in that compounds having toxicity or the like are neither used nor by-produced. The process also has the merit of easy control of the molecular weight of the intended organopolysiloxane.

    摘要翻译: 制备高分子量有机聚硅氧烷的方法包括在选自下列通式(1)和(I)表示的酸性化合物的酸性化合物存在下,使含羟基的有机硅氧烷作为起始原料进行脱水缩合反应, 2):(1)(2)其中,在式中,n是1至10的整数,k是0至8的整数,并且1和m各自为整数0或 其中1 + m在1至10的范围内。该方法优于常规方法,因为具有毒性等的化合物既不使用也不再生产。 该方法还具有易于控制目标有机聚硅氧烷的分子量的优点。

    Fluorinated cyclic organic silicon compounds and method for making
    43.
    发明授权
    Fluorinated cyclic organic silicon compounds and method for making 失效
    氟化环状有机硅化合物及其制备方法

    公开(公告)号:US5202453A

    公开(公告)日:1993-04-13

    申请号:US769487

    申请日:1991-10-01

    IPC分类号: C07F7/21

    CPC分类号: C07F7/21

    摘要: Fluorinated cyclic organic silicon compounds of the general formula: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 are independently selected from alkyl groups having 1 to 6 carbon atoms and n is an integer of from 1 to 6 are novel and susceptible to ring-opening polymerization to form chain siloxane polymers having improved properties. The cyclic compounds are produced by reacting disiloxane diols with fluorinated organic silicon compounds in the presence of amine catalysts.

    摘要翻译: 具有以下通式的氟化环状有机硅化合物:其中R 1,R 2,R 3,R 4和R 5独立地选自具有1至6个碳原子的烷基,n为1至6的整数。 并且易于开环聚合以形成具有改进性能的链状硅氧烷聚合物。 在胺催化剂存在下,使二硅氧烷二醇与氟化有机硅化合物反应制备环状化合物。

    RTV organopolysiloxane compositions
    44.
    发明授权
    RTV organopolysiloxane compositions 失效
    RTV有机硅氧烷组合物

    公开(公告)号:US5126420A

    公开(公告)日:1992-06-30

    申请号:US562318

    申请日:1990-08-03

    CPC分类号: C08K5/5425 Y10S528/901

    摘要: A mixture of (A) a diorganopolysiloxane end-blocked with a hydroxyl group, (B) an .alpha.,.beta.-substituted vinyloxysilane, or a hydrolyzate thereof, and (C) a perfluorocarboxylic acid derivative provides an RTV organopolysiloxane composition which is stable and non-corrosive to metal.

    摘要翻译: 端基封端的(A)二羟基有机聚硅氧烷,(B)α,β-取代的乙烯基氧基硅烷或其水解产物和(C)全氟羧酸衍生物的混合物提供了一种稳定和非稳定的RTV有机聚硅氧烷组合物, 腐蚀金属。

    Novel organosilicon compound and method for the preparation thereof
    48.
    发明授权
    Novel organosilicon compound and method for the preparation thereof 失效
    新型有机硅化合物及其制备方法

    公开(公告)号:US4730073A

    公开(公告)日:1988-03-08

    申请号:US73469

    申请日:1987-07-15

    CPC分类号: C07F7/1828

    摘要: A novel organosilicon compound is disclosed which is an isocyanato group-containing organosilane compound having one or two isopropenyloxy groups as represented by the general formula (CH.sub.2 .dbd.CCH.sub.3 --O).sub.n (CH.sub.3).sub.3-n Si(CH.sub.2).sub.3 NCO, in which n is 1 or 2. The compound can be prepared by heating a mixture of a chlorosilane of the formula (Cl).sub.n (CH.sub.3).sub.3-n Si(CH.sub.2).sub.3 NCO and acetone in the presence of a tertiary amine compound, e.g., triethyl amine, acting as an acceptor of hydrogen chloride and as a catalyst to effect the enolation reaction.

    摘要翻译: 公开了一种新颖的有机硅化合物,其是具有通式(CH 2 = CCH 3 -O)n(CH 3)3-n Si(CH 2)3 NCO)表示的具有一个或两个异丙烯氧基的含异氰酸酯基的有机硅烷化合物,其中n为 该化合物可以通过在叔胺化合物例如三乙胺的存在下加热式(Cl)n(CH 3)3-nSi(CH 2)3 NCO的氯代硅烷和丙酮的混合物来制备,其作用 作为氯化氢的受体和作为催化剂进行搪化反应。

    Room temperature curable organopolysiloxane
    49.
    发明授权
    Room temperature curable organopolysiloxane 失效
    室温可固化有机聚硅氧烷

    公开(公告)号:US4248993A

    公开(公告)日:1981-02-03

    申请号:US63172

    申请日:1979-08-03

    申请人: Toshio Takago

    发明人: Toshio Takago

    摘要: Novel room temperature curable organopolysiloxane compositions which are stable as ready mixed for a long period of time when kept in an air-tight container and readily curable at room temperature to form rubber-like elastomers when exposed to the moisture-containing air. The composition comprises a diorganopolysiloxane terminated at both chain ends with hydroxy groups, an organosilane having in a molecule 3 or 4 substituted or unsubstituted vinyloxy groups or a partial hydrolysis-condensation product thereof, and an organosilane or an organopolysiloxane having in a molecule at least one monovalent group expressed by the general formula of the type (R.sub.2 N).sub.2 C.dbd.N--, where R is a hydrogen atom or a monovalent hydrocarbon group. The compositions are free from toxicity and offensive odor as well as corrosiveness against various substrate surfaces, especially of metals.

    摘要翻译: 新型室温可固化的有机基聚硅氧烷组合物,当保持在气密容器中时,可长时间稳定地混合,并且当暴露于含湿气体时容易在室温下固化形成橡胶状弹性体。 该组合物包含在两个末端具有羟基的二有机基聚硅氧烷,分子中具有3或4个取代或未取代的乙烯基氧基的有机硅烷或其部分水解缩合产物,以及分子中具有至少一个分子的有机硅烷或有机聚硅氧烷 由式(R2N)2C = N-的通式表示的一价基团,其中R是氢原子或一价烃基。 组合物没有毒性和恶臭,以及对各种基材表面,特别是金属的腐蚀性。