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:
Oct. 21, 2014
Filed:
Oct. 10, 2012
Dow Corning Corporation, Midland, MI (US);
Dimitris Katsoulis, Midland, MI (US);
Robert Larsen, Midland, MI (US);
Matthew McLaughlin, Midland, MI (US);
Wendy Sparschu, Bay City, MI (US);
Dow Corning Corporation, Midland, MI (US);
Abstract
A method of preparing a diorganodihalosilane, the method comprising the following separate and consecutive steps: (a) treating a metal catalyst comprising a metal selected from the groups consisting of i) gold, ii) gold and copper, iii) gold, copper and magnesium, iv) copper, rhodium and gold, v) copper, rhodium, and rhenium, vi) rhenium and palladium, vii) copper, and viii) copper and magnesium with a mixture comprising hydrogen gas and an organotrihalosilane at a temperature from 500 to 1400° C. to form a silicon-containing metal intermediate; and (b) reacting the silicon-containing metal intermediate with an organohalide according to the formula RX, wherein R is C-Chydrocarbyl and X is halo, at a temperature from 100 to 600° C. to form a diorganodihalosilane and a depleted silicon-containing metal intermediate.