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:
Nov. 09, 1999
Filed:
Mar. 31, 1999
Applicant:
Inventors:
Wilfried Kalchauer, Burghausen, DE;
Herbert Straussberger, Mehring/Od, DE;
Willi Streckel, Mehring/Od, DE;
Assignee:
Wacker-Chemie GmbH, Munchen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
556472 ; 556473 ;
Abstract
In the direct synthesis of methylchlorosilanes by reacting methyl chloride with a catalyst composition which comprises silicon, copper catalyst, zinc promoters and tin promoters and/or antimony promoters, a catalyst composition is used which was activated in advance by treatment with HCl under specific activation conditions.