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:
Aug. 28, 2001
Filed:
Sep. 04, 1997
Applicant:
Inventors:
Josef Wünsch, Schifferstadt, DE;
David Fischer, Gönnheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 1/208 ; C08F 4/64 ; C08F 1/204 ;
U.S. Cl.
CPC ...
C08F 1/208 ; C08F 4/64 ; C08F 1/204 ;
Abstract
In a process for preparing polymers of vinylaromatic compounds at from 0 to 150° C. in the presence of metallocene complexes as catalysts, the polymerization is carried out at a pressure of from 5 to 300 bar in the presence of aliphatic C,-C,-hydrocarbons using a coordination complex selected from the group consisting of strong, uncharged Lewis acids, ionic compounds having Lewis acid cations and ionic compounds having Bronsted acids as cations as cocatalyst.