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. 22, 2000
Filed:
Aug. 18, 1997
Applicant:
Inventors:
Andreas Winter, Glashutten/Ts., DE;
Martin Antberg, Hofheim/Ts., DE;
Bernd Bachmann, Eppstein/Ts., DE;
Volker Dolle, Bensheim, DE;
Frank Kuber, Oberursel, DE;
Jurgen Rohrmann, Kelkheim/Ts., DE;
Walter Spaleck, Liederbach, DE;
Assignee:
Targor GmbH, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
526160 ; 526943 ; 502117 ; 502154 ;
Abstract
Disclosed is a catalyst system and method of polymerizing olefins, wherein the catalyst comprises a bridged metallocene of the following structure: ##STR1## wherein M.sup.1 is a transition metal of groups 4-6, R.sup.1 -R.sup.9 is hydrogen or other groups with the proviso that substituents R.sup.3 and R.sup.6 are not hydrogen, and wherein the metallocene is present in the meso form or in a mixture including both the meso and racemic forms.