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:
Jan. 11, 2000
Filed:
Jul. 05, 1996
Applicant:
Inventors:
Onko J Gelling, Geleen, NL;
Imre Toth, Geleen, NL;
Assignee:
DSM NV, , NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
554124 ; 554128 ; 540484 ; 540485 ; 540538 ; 558353 ; 562517 ; 562523 ; 562531 ; 562553 ; 562606 ; 564469 ; 564471 ; 564472 ; 564473 ; 568448 ; 568451 ; 568484 ; 568909 ;
Abstract
Process for the preparation of a linear .omega.-formyl-carboxylic acid or a corresponding linear formylnitrile compound starting from an internally unsaturated C.sub.4 -C.sub.12 carboxylic acid or a corresponding ester or nitrile by means of hydroformylation in the presence of carbon monoxide, hydrogen and a catalyst system, wherein the hydroformylation is carried out in an aqueous medium and in that the catalyst system comprises platinum and a water-soluble organic bidentate ligand.