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:
Apr. 28, 1987
Filed:
Sep. 13, 1982
Applicant:
Inventors:
Assignee:
Ashland Oil, Inc., Ashland, KY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
260413 ; 260419 ; 562400 ; 562497 ; 562521 ; 562606 ;
Abstract
In the preparation of a carboxylic acid by the carbonylation of an olefin in the presence of hydrofluoric acid catalyst, the hydrofluoric acid is isolated from the carboxylic acid by means of an ion-permeable membrane and the thus-isolated hydrofluoric acid can be recycled to again catalyze the carbonylation reaction.
Quick Actions:
Grote, Dace. (1987). Hf separation in a carbonylation process (U.S. Patent No. 4661296). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4661296
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile