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:
Jun. 18, 1996
Filed:
Dec. 28, 1994
Applicant:
Inventors:
Carolina B Hansen, Sittard, NL;
Antonius J Teunissen, Geleen, NL;
Assignees:
DSM N.V., Heerlen, NL;
E.I. Du Pont de Nemours & Co., Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
560175 ; 560176 ; 560177 ; 560206 ; 568454 ;
Abstract
The invention relates to a process for the preparation of a 5-formylvalerate ester by hydroformylating a mixture of pentenoate esters in the presence of a catalyst system which catalyst system comprises a metal from group 8-10 of the Periodic Table of Elements and a mono- or multidentate organic phosphorous ligand, wherein the mixture of pentenoate esters contains less than 500 ppm hydroperoxide compounds.