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    • 11. 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
    • 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
    • EP0036054A3
    • 1981-10-07
    • EP80304331
    • 1980-12-02
    • DOW CORNING CORPORATION
    • Homan, Gary Rex
    • C08L83/08C08K03/18C08K05/56C08K05/09C08J03/24D21H01/40H01B03/46C08L83/10C08L81/04C08K05/37
    • C08L83/10C08G75/14C08K3/18C08K5/56H01R4/2445H01R4/245C08L83/08
    • 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.
    • 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。