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. 01, 1993
Filed:
Jul. 13, 1992
Applicant:
Inventors:
Peter A Klusener, Amsterdam, NL;
Johannes J Snel, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528392 ; 502162 ;
Abstract
A catalyst composition useful in the preparation of a polymer composition includes a Group VIII metal and a phosphorus bidentate ligand of the general formula (R.sub.2)(R.sub.4)P-R.sub.3 -P(R.sub.2)(R.sub.4) wherein R.sub.2 and R.sub.4 are optionally polar substituted alkyl groups, differing from each other in carbon number, and wherein R.sub.3 is a divalent organic bridging group which contains four atoms. Such catalyst compositions are particularly useful for preparing copolymers of carbon monoxide with .alpha.-olefins having at least three carbon atoms.