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:
Mar. 19, 1991
Filed:
Jul. 28, 1989
Applicant:
Inventor:
Johannes A Van Broekhoven, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528392 ; 526 69 ; 526 70 ;
Abstract
In the process for the production of a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon, the liquid portion of the product mixture is suitable for recycle as the catalyst composition mixture in subsequent polymerizations when the linear alternating polymer produced has a limiting viscosity number, measured in m-cresol at 60.degree. C., of from about 0.5 dl/g to about 2.5 dl/g and a melting point of at least 225.degree. C.