Method for preparing organohalosilanes

Details Method for preparing organohalosilanes Method for preparing organohalosilanes

1989-08-03

1990-10-30

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

C07F 716

Patent

active

049669869

ABSTRACT:
The present invention provides a method for increasing the yield of methyldichlorosilane obtained from the reaction of silicon metal with methyl chloride without substantially decreasing the combined yield of methyldichlorosilane and dimethyldichlorosilane. This is achieved by blending the methyl chloride with an amount of hydrogen chloride sufficient to accomplish this without forming significant amounts of undesirable SiCl.sub.4 and/or HSiCl.sub.3. In accordance with a preferred embodiment of the present method the concentration of hydrogen chloride is from 0.1 to about 3 weight percent, based on methyl chloride. Most preferably the hydrogen chloride is present only from the first 50% to about 90% of the methyl chloride addition.

REFERENCES:
patent: 2488487 (1949-11-01), Barry et al.

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