Improved process for manufacture of alkyhalosilanes.

摘要

The present invention is an improvement of the Direct Process for the manufacture of alkylhalosilanes by the contact of powdered metallurgical grade silicon with an alkyl halide in the presence of a copper catalyst. The practice of the invention reduces lot-to-lot variations in silicon conversion to desired dialkyldihalosilanes. The process comprises alloying 0.01 to 9.0 weight percent copper with the silicon to be used in the process and separating slag. In a preferred embodiment of the present process, silicon-copper alloy is pulverized to a powder and mixed with additional copper and other catalysts to form a contact mass reactive with alkylhalides.