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. 13, 2014
Filed:
Apr. 06, 2011
Aswini K. Dash, Midland, MI (US);
Charles Alan Hall, Crestwood, KY (US);
Dimitris Katsoulis, Midland, MI (US);
Robert Thomas Larsen, Midland, MI (US);
Matthew J. Mclaughlin, Midland, MI (US);
Jonathan David Wineland, Bedford, KY (US);
Aswini K. Dash, Midland, MI (US);
Charles Alan Hall, Crestwood, KY (US);
Dimitris Katsoulis, Midland, MI (US);
Robert Thomas Larsen, Midland, MI (US);
Matthew J. McLaughlin, Midland, MI (US);
Jonathan David Wineland, Bedford, KY (US);
Dow Corning Corporation, Midland, MI (US);
Abstract
A process for preparing organohalosilanes comprising combining hydrogen, a halosilane having the formula HSiX(I) and an organohalide having the formula RX (II), wherein R is C-Calkyl or C-Ccycloalkyl, each X is independently halo, and the subscript a is 0, 1, or 2, in the presence of a sufficient amount of a catalyst effective in enabling the replacement of one or more of the halo groups of the halosilane with the R group from the organohalide, at a temperature from 200 to 800° C., to form an organohalosilane and a hydrogen halide, wherein the volumetric ratio of hydrogen to halosilane is from 1:3 to 1:0.001 and the volumetric ratio of hydrogen to organohalide is from 1:1 to 1:0.001, and wherein the catalyst is optionally treated with the hydrogen or the halosilane prior to the combining.