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:
Feb. 23, 1999
Filed:
Apr. 28, 1997
Applicant:
Inventors:
Patrick M Burke, Wilmington, DE (US);
James M Garner, Wilmington, DE (US);
Wilson Tam, Boothwyn, PA (US);
Kristina A Kreutzer, Wilmington, DE (US);
Antonius JJ.M. Teunissen, Geleen, NL;
Carina S Snijder, Sittard, NL;
Carolina B Hansen, Sittard, NL;
Assignees:
DSM N.V., Heerlen, NL;
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568454 ; 568451 ; 502155 ;
Abstract
A hydroformylation catalyst composition comprising iridium or rhodium and a bidentate organic phosphite ligand wherein the two phosphorus atoms of the phopshite ligand are linked with a 2,2'-dihydroxyl-1,1'-binapthalene bridging group having the following structure (Q): ##STR1## in which R.sup.1 and R.sup.2 are substituents other than hydrogen.