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    • 81. 发明授权
    • Continuous process for preparing silanes and siloxanes having SiOC groups
    • 制备具有SiOC基团的硅烷和硅氧烷的连续工艺
    • US4298753A
    • 1981-11-03
    • US209447
    • 1980-11-24
    • Anton SchinabeckNorbert ZellerTassilo LindnerGeorg EngelsbergerRudolf Riedle
    • Anton SchinabeckNorbert ZellerTassilo LindnerGeorg EngelsbergerRudolf Riedle
    • C08G77/00C07F7/18C08G77/06C08G77/22C07F7/04C07F7/10
    • C07F7/188C08G77/06
    • A continuous process for preparing silanes and siloxanes having SiOC groups which comprises (a) introducing in a liquid phase a chlorosilane and a hydroxyl-containing aliphatic compound in parallel flow into a first stage of a first reactor in an amount such that from 0.5 to 0.9 gram-mole of hydroxyl group is present per gram-atom of Si-bonded chlorine; (b) removing the liquid reaction mixture from the first reactor; (c) introducing the reaction mixture at the head of a column used as the second reactor which is maintained at an elevated temperature; (d) adding a hydroxyl-containing aliphatic compound as a gas at the lower end of the column or at a point between the lower end and the upper end of the lower one-third of the column, in an amount at least sufficient to completely react with the Si-bonded chlorine present in the reaction mixture obtained from the first stage and (e) removing the silane containing SiOC groups or polysiloxane containing SiOC groups from the column at a point below the point of addition of the hydroxyl-containing aliphatic compound.
    • 一种用于制备具有SiOC基团的硅烷和硅氧烷的连续方法,其包括(a)以液相方式将氯硅烷和含羟基的脂族化合物平行流入第一反应器的第一阶段,其量使得为0.5至0.9 每克原子的硅键合氯存在克分子的羟基; (b)从第一反应器中除去液体反应混合物; (c)将反应混合物引入用作第二反应器的柱头,保持在升高的温度; (d)在柱的下端或在塔的下三分之一的下端和上端之间的点处加入含羟基的脂族化合物作为气体,其量至少足以完全 与从第一阶段获得的反应混合物中存在的Si键合的氯反应,和(e)在含羟基的脂族化合物的加入点以下的点从塔中除去含有SiOC基团的含硅烷的硅烷或聚硅氧烷 。