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:
Jul. 10, 1990
Filed:
Dec. 15, 1989
Applicant:
Inventors:
Howard B Yokelson, Aurora, IL (US);
Walter Partenheimer, Naperville, IL (US);
Robert Gipe, Wheaton, IL (US);
Assignee:
Amoco Corporation, Chicago, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
C07F / ; C07F / ;
U.S. Cl.
CPC ...
556438 ;
Abstract
An improved process is disclosed for preparation of silicon-containing aromatic polyacids by liquid phase oxidation of a mono- or polyalkyl substituted diaryldialkylsilane in the presence of oxygen and a catalyst comprising cobalt-manganese-bromine. Bis(p-tolyl)dimethylsilane is oxidized to bis(p-carboxyphenyl)dimethylsilane and bis(3,4-dimethylphenyl)-dimethylsilane is oxidized to bis(3,4-dicarboxylphenyl)dimethylsilane.
Quick Actions:
Yokelson, Howard. (1990). Process for producing silicon-containing aromatic polyacids (U.S. Patent No. 4940810). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4940810
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile