Dow Corning Corporation

Dow Corning Toray Company, Ltd.

Stephen Paul Ferguson

Makoto Iwai

Robert F Jarvis, Jr

Brian M Naasz

Kimberly K Oltmanns

Darrel L Whiteley

Gordon L Warrick

William Xavier Bajzer

Emmanuel Babatunde Odunlami

A stabilizing agent for a hydroalkoxysilane such as triethoxysilane and trimethoxysilane characterized by comprising a carboxylate such as an alkali metal salt or an alkali earth metal salt of a carboxylic acid having 1 to 18 carbon atoms; a method for stabilizing a hydroalkoxysilane by combining it with a carboxylate; and a hydroalkoxysilane stabilized with a carboxylate.

Stabilizing agent for hydroalkoxysilane, stabilization method, and stabilized hydroalkoxysilane

A mixture containing a monohydric alkyl alcohol and an alkoxysilane is purified by (i) adding an organic salt or an inorganic salt to the monohydric alkyl alcohol and the alkoxysilane; (ii) mixing the organic or inorganic salt with the monohydric alkyl alcohol and the alkoxysilane; and (iii) separating from (ii) a first phase containing the alkoxysilane, and a second phase containing the monohydric alcohol and the organic or inorganic salt. The preferred salt is lithium chloride, and the monohydric alkyl alcohol is most typically methyl alcohol or ethyl alcohol.

Method of purifying alkoxysilanes

A process for the production of monosilanes from the high-boiling residue resulting from the reaction of organohalides with silicon metalloid in a process typically referred to as the 'direct process.' The present process comprises forming a mixture comprising an organotrihalosilane and the high-boiling residue in the presence of hydrogen gas and a catalytic amount of aluminum trichloride. The present process results in consumption of the organotrihalosilane rather than a net increase which typically occurs in processes for hydrogenation of the high-boiling residue. At least a portion of the catalytic amount of aluminum trichloride may be formed in situ during conduct of the direct process and isolation of the high-boiling residue.

Alumimum trichloride catalyzed hydrogenation of high-boiling residue

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Midland, MI, United States of America

Stephen Paul Ferguson