| 摘要 |
A process for the production of organosilicon compounds of the formula:where R is independently a monovalent hydrocarbon of 1 to 12 carbon atoms; Alk is a divalent hydrocarbon of 1 to 18 carbon atoms;m is an integer of 0 to 2, n is a number from 1 to 10;is disclosed. The process comprises:(A) reacting an alkali metal hydroxide compound, a sulfide compound having the formula M2Sn or MHS,where H is hydrogen, M is ammonium or an alkali metal, n is as defined above, and sulfur in water to form a polysulfide mixture,(B) reacting said polysulfide mixture with a silane compound of the formula;where X is Cl, Br or I, and m is the same as above,in the presence of a phase transfer catalyst. The process provides sulfur containing organosilicon compounds based on phase transfer catalysis techniques that result in a final product composition having greater stability, purity, and appearance. The process also minimizes or eliminates hydrogen sulfide as a side product.
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