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:
Oct. 16, 1984
Filed:
Dec. 21, 1982
Applicant:
Inventors:
Anil B Goel, Worthington, OH (US);
Harvey J Richards, Columbus, OH (US);
Assignee:
Ashland Oil, Inc., Ashland, KY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
260398 ; 2605 / ; 260546 ;
Abstract
The conversion of a carboxylic acid having the formula RCOOH wherein R is a hydrocarbon group having from 1 to 20 carbon atoms to its corresponding anhydride by contacting said carboxylic acid with a salt of at least one metal selected from the group consisting of palladium, cobalt, manganese, chromium, nickel, copper, rhodium, iron and thorium at a temperature in the range of from about 120.degree. to 300.degree. C. is described.