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    Silicones and process for their production
    2.
    发明公开
    Silicones and process for their production 失效
    有机硅及其生产工艺

    公开(公告)号：EP0014599A3

    公开(公告)日：1981-07-01

    申请号：EP80300418

    申请日：1980-02-13

    申请人： M & T CHEMICALS, INC.

    发明人： Berger, Abe

    IPC分类号： C07F07/08 ,  C07F07/18 ,  C08G77/38 ,  C08G59/40 ,  H01B03/46

    CPC分类号： C07F7/1844 ,  C07F7/0852 ,  C07F7/0854 ,  C08G59/4085 ,  C08G77/38 ,  H01B3/46

    摘要： Novel silicones having the general formula
    wherein 0 is an aromatic nucleus, Z is-S-
    or-0-, R is a bivalent group or a functional bivalent group, each R' is chosen from monovalent hydrocarbon radicals and functional hydrocarbon radicals and any one R' may be the same as or different from another R 1 , R 3 is hydrogen or a hydrocarbon radical or a functional group or atom, x is 0 or an integer of 1 or more, F is a functional group or atom, with the proviso that F is not primary amino when Z is other than -0-, and T is a group chosen from alkoxy, aryloxy or other substituted or unsubstituted oxyhydrocarbyl radical and a group having the general formula
    wherein Q, Z, R, R 1 , R 3 and F are as defined above and any one R may be the same as or different from the other R and one R 3 may be different from the other R 3 . These compounds may be made by reacting the compound
    with
    or with
    where G denotes alkoxy or aryloxy or other substituted or unsubstituted oxyhydrocarbyl radical under conditions set out in the specification. The compounds are suitable for making copolymers of silicones with other organic chemicals, curing catalys for epoxies, urethane and the like.

    High voltage insulators
    6.
    发明公开
    High voltage insulators 失效
    高电压绝缘子

    公开(公告)号：EP0123487A3

    公开(公告)日：1985-12-18

    申请号：EP84302562

    申请日：1984-04-13

    申请人： DOW CORNING CORPORATION

    发明人： Niemi, Randolph Gary

    IPC分类号： H01B19/04 ,  H01B17/50 ,  H01B03/46 ,  C08L83/04 ,  C08K03/20

    CPC分类号： H01B19/04 ,  C08G77/16 ,  C08L83/04 ,  H01B3/46 ,  C08L2666/44 ,  C08L2666/54

    摘要： A method of manufacturing an improved electrical high voltage coated insulator is described. The method involves applying and curing a one-part, room temperature curable silicone composition to the surface of an insulator, the insulator surface having a minimum designated arc resistance. The silicone composition is the product obtained by mixing in the substantial absence of moisture a specified polydimethylsiloxane fluid containing hydroxyl radicals, finely divided aluminium hydroxide filler, a silane of the formula R b Si(ON=X) 4 - b and an optional condensation catalyst. The composition cures on exposure to atmospheric moisture to produce a coating on the insulator that resists the development of leakage currents and flashover failure upon exposure to electrical stress, moisture, contamination, and other outdoor weathering stresses.

    Oxygen-curable mercapto-functional organosilicon-organic compound compositions possessing rapid surface reaction and method of forming higher molecular weight products therefrom
    9.
    发明公开
    Oxygen-curable mercapto-functional organosilicon-organic compound compositions possessing rapid surface reaction and method of forming higher molecular weight products therefrom 失效
    负责快速表面反应的氧可熔融的功能性有机有机化合物组合物和形成高分子量产物的方法

    公开(公告)号：EP0036054A3

    公开(公告)日：1981-10-07

    申请号：EP80304331

    申请日：1980-12-02

    申请人： DOW CORNING CORPORATION

    发明人： Homan, Gary Rex

    IPC分类号： C08L83/08 ,  C08K03/18 ,  C08K05/56 ,  C08K05/09 ,  C08J03/24 ,  D21H01/40 ,  H01B03/46 ,  C08L83/10 ,  C08L81/04 ,  C08K05/37

    CPC分类号： C08L83/10 ,  C08G75/14 ,  C08K3/18 ,  C08K5/56 ,  H01R4/2445 ,  H01R4/245 ,  C08L83/08

    摘要： Compositions which are stable in the absence of oxygen are formed by mixing the following substantially in the absence of oxygen:
    (A) 100 parts by weight of at least one mercapto-functional organosilicon-organic copolymer or mixtures of at least two different types of components selected from the following three types: the above copolymers, mercapto- functional organic compounds free of silicon atoms and mercapto-functional organosilicon compounds wherein all three types contain an average of at leasttwo mercapto groups per molecule; (B) 0-200 parts byweight of at least one filler; (C) a catalytic amount, preferably from 0.1 to 6 parts by weight, of an iron carbonyl catalyst selected from the group consisting of Fe(CO) 5 , Fe 2 (CO) 9 , Fe 3 (CO) 12 , dicyclopentadienyldiiron tetracarbonyl, butadieneiron tricarbonyl and cyclohexadieneiron tricarbonyl; and (D) 0.1-6 parts by weight of an acid, such as 2-ethylhexanoic acid, which meets a particular set of criteria.
    The compositions polymerize or cure to form higher molecular weight products at room temperature upon exposure to oxygen. These compositions are especially useful as coatings such as for paper or as electrical insulation because they possess a rapid rate of surface cure. Elastomeric sealant compositions can be prepared which rapidly become tack-free at the surface and are less prone to surface contamination by foreign matter such as dust during cure.

    摘要翻译： 在不存在氧的情况下稳定的组合物通过以下方式形成：基本上在不存在氧的情况下混合以下物质：（A）100重量份的至少一种巯基官能的有机硅 - 有机共聚物或至少两种不同类型的组分的混合物 选自以下三种类型：上述共聚物，不含硅原子的巯基官能的有机化合物和巯基官能的有机硅化合物，其中所有三种类型每分子含有至少两个巯基平均值; （B）0-200重量份的至少一种填料; （C）催化量，优选0.1至6重量份的选自Fe（CO）5，Fe 2（CO）9，Fe 3（CO）12，四羰基二环戊二烯基二铁，三羰基二苯基铁 和环己二烯三羰基; 和（D）0.1-6重量份满足特定标准的酸，如2-乙基己酸。 组合物在暴露于氧气时，在室温下聚合或固化形成较高分子量的产物。 这些组合物特别可用作涂层，例如纸或电绝缘，因为它们具有快速的表面固化速率。 可以制备弹性体密封剂组合物，其在表面快速变得无粘性，并且在固化期间不易受外来物质如灰尘的表面污染。