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:
Jan. 15, 2002
Filed:
Feb. 14, 2001
Applicant:
Inventors:
Assignee:
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07F 7/16 ;
U.S. Cl.
CPC ...
C07F 7/16 ;
Abstract
Organohalosilanes are prepared by reacting metallic silicon with a halogenated hydrocarbon in the presence of a copper or copper compound catalyst and an activated aluminum, aluminum alloy or aluminum carbide promotor. The reaction is carried out at a temperature of 250-400° C. in a stirred tank reactor or a fluidized bed reactor. The inventive process shortens the time required for activation in the Rochow reaction and increases the selectivity for desirable diorganodihalosilanes. The steady state is thus prolonged and conversion of the silicon enhanced, resulting in an improved reaction performance.