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    • 8. 发明申请
    • IMPROVED METHOD FOR OBTAINING ORGANOSILANES IMPLEMENTING A REDISTRIBUTION REACTION
    • 获得有机物实现再分配反应的改进方法
    • WO1997047629A1
    • 1997-12-18
    • PCT/FR1997001034
    • 1997-06-11
    • RHONE-POULENC CHIMIECATHALA, MaxCOLIN, PascaleDARDARE, MichelIGERSHEIM, Françoise
    • RHONE-POULENC CHIMIE
    • C07F07/12
    • C07F7/20C07F7/125
    • Improved method for obtaining organosilanes comprising: a redistribution reaction between a chlorinated organohydrogenosilane of formula (1) (R)a(H)bSiCl4-a-b and an organo-substituted and optionally chlorinated silane of formula (2) (R')cSiCl4-c, formulae in which: a = 1 or 2; b = 1 or 2; a + b = 3; c = 1,2, 3 or 4; the symbols R and R', the same or different, represent alkyl and aryl radicals; the distribution reaction taking place in the presence of a sufficient amount of a catalyst consisting of a Lewis acid of formula (3) M(X)d in which: M represents a metal selected among Ti, Fe, Cu, Ag, Zn, Cd, Hg, Al, Ga, In, B, Sn, Pb, Sb, and Bi; X represents a halogen atom; d represents the valency of metal M; and separation by distillation of the chlorinated organohydrogenosilane produced by redistribution; the said method being characterised in that, after redistribution, at least one redistribution catalyst inhibiting compound satisfying the following definitions is used: it is selected among the fluid polyorganosiloxanes (POS) having a viscosity at 25 DEG C not exceeding 5000 mPa.s; it is used in such proportions that the ratio r = number of gram-atoms of metal M given by the catalyst/number of gram-atoms of oxygen given by the inhibitor does not exceed 0.9.
    • 用于获得有机硅烷的改进方法包括:式(1)(R)a(H)bSiCl 4-ab的氯化有机氢硅烷与式(2)的有机取代的和任选氯化的硅烷(R')c SiCl 4 -c之间的再分布反应 其中:a = 1或2; b = 1或2; a + b = 3; c = 1,2,3或4; 符号R和R'相同或不同,表示烷基和芳基; 在足量的由式(3)M(X)d的路易斯酸组成的催化剂存在下进行分配反应,其中:M表示选自Ti,Fe,Cu,Ag,Zn,Cd ,Hg,Al,Ga,In,B,Sn,Pb,Sb和Bi; X表示卤原子; d表示金属M的化合价; 并通过再分配产生的氯化有机氢硅烷进行蒸馏分离; 所述方法的特征在于,在再分配之后,使用至少一种满足以下定义的再分布催化剂抑制化合物:其选自粘度在25℃不超过5000mPa.s的流体聚有机硅氧烷(POS); 以比例r =由催化剂给出的金属M的数量/抑制剂给出的氧原子数不超过0.9的比例使用。