Dow Corning Corporation

Kurt E Anderson

Dimitris Katsoulis

Aswini K Dash

Jonathan David Wineland

Charles Alan Hall

Robert Thomas Larsen

Matthew J McLaughlin

A method of preparing organohalosilanes comprising combining an organohalide having the formula RX (I), wherein R is a hydrocarbyl group having 1 to 10 carbon atoms and X is fluoro, chloro, bromo, or iodo, with a contact mass comprising at least 2% (w/w) of a palladium suicide of the formula PdSi(II), wherein x is an integer from 1 to 5 and y is 1 to 8, or a platinum suicide of formula PtSi (III), wherein z is 1 or 2, in a reactor at a temperature from 250 to 700&#xb0; C. to form an organohalosilane.

Method of preparing an organohalosilane

A method of preparing a diorganodihalosilane, the method comprising the following separate and consecutive steps: (i) treating a preformed metal silicide with a mixture comprising hydrogen gas and a silicon tetrahalide at a temperature from 300 to 1400&#xb0; C. to form a treated metal silicide, wherein the preformed metal silicide comprises a metal selected from at least one of Ni, Pd, or Pt; and (ii) reacting the treated metal silicide with an organohalide according to the formula RX at a temperature from 250 to 700&#xb0; C. to form a diorganodihalosilane, wherein R is C-Chydrocarbyl and X is halo.

Method of preparing a diorganodihalosilane

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Crestwood, KY, United States of America

Kurt E Anderson