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:
Sep. 14, 1993
Filed:
Jun. 29, 1992
Applicant:
Inventors:
Assignee:
Wacker-Chemie GmbH, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
556466 ;
Abstract
A process for purifying organopolysiloxanes, which comprises treating organopolysiloxanes after their preparation with an elemental metal. Impurities which are related to the preparation of organopolysiloxanes and cause changes in color, in particular during storage under the influence of heat, subsequent clouding, inhibition of catalysts, a lack of heat stability, a lack of dielectric strength or the formation of odors, especially after exposure to light, are removed by the process of this invention.