The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 1999
Filed:
Sep. 30, 1998
Bruce Robert Crum, Madison, IN (US);
Steven Kerry Freeburne, Edgewood, KY (US);
Larry Herbert Wood, Campbellsburg, KY (US);
Dow Corning Corporation, Midland, MI (US);
Abstract
A process for converting a high-boiling fraction resulting from the reaction of methyl chloride with silicon metalloid in a process typically referred to as the 'direct process' to monosilanes. The process comprises forming a mixture comprising a low-boiling fraction comprising monosilanes and a high-boiling fraction comprising polymeric silicon containing compounds and contacting the mixture with hydrogen gas in the presence of a catalyst effective in promoting conversion of the polymeric silicon containing compounds to monosilanes. The process results in conversion of the high-boiling fraction to monosilanes. At least a portion of the catalyst present may be formed in situ during conduct of the direct process and isolation of the fractions.