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. 17, 2000
Filed:
Jul. 23, 1998
Applicant:
Inventor:
Harold Stanley Bruner, Hockessin, DE (US);
Assignees:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
DSM N.V., , NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
562522 ; 562600 ;
Abstract
An improved process for the preparation of 3-pentenoic acid by reaction of butadiene with carbon monoxide and water in the presence of a rhodium-containing catalyst and an iodide promoter where carbon monoxide stripping is employed to separate and recover the 3-pentenoic acid product.