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:
Dec. 24, 1991
Filed:
Aug. 29, 1990
Applicant:
Inventors:
Johannes L Syrier, Amsterdam, NL;
Gerrit G Rosenbrand, Amsterdam, NL;
Peter Richters, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528486 ; 528392 ; 528495 ; 528496 ;
Abstract
Process for the preparation of copolymers of carbon monoxide with one or more olefinically unsaturated compounds, by copolymerizing the monomers in the presence of a catalyst composition containing a Group-VIII metal and washing the formed copolymer by contacting the copolymer with a liquid which contains, dissolved in a solvent, a dicarboxylic or tricarboxylic acid having up to 8 carbon atoms, or a zinc, aluminum or magnesium salt thereof.