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:
Aug. 30, 1977
Filed:
Jul. 26, 1976
Applicant:
Inventors:
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C07C / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 2606 / ;
Abstract
An improved process for preparing bisphenols is described wherein a phenol is reacted with a ketone or aldehyde such as acetone in the presence of an ion-exchange resin modified by partial neutralization with p-aminothiophenol.
Kwantes, Arien. (1977). Process for preparation of modified ion-exchange resin (U.S. Patent No. 4045379). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4045379
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile