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. 18, 2003
Filed:
Mar. 08, 2001
Katrin Köhler, Dossenheim, DE;
Eike Poetsch, Mühltal, DE;
Herbert Schumann, Berlin, DE;
Sebastian Dechert, Berlin, DE;
Walter Kaminsky, Pinneberg, DE;
Andre Laban, Hamburg, DE;
Manfred Arnold, Leissling, DE;
Jana Knorr, Dessau, DE;
Birgit Corinna Wassermann, Berlin, DE;
Merck Patent Gesellschaft Mit Beschränkter Haftung, Darmstadt, DE;
Abstract
Described are catalyst systems having aluminium alkyl complexes of the formula (I) described herein applied to magnesium chloride, SiO or SiO in combination with MgCl as support in the presence of titanium halides or vanadium halides and internal and, if desired, external donors act both as cocatalysts and as stereoselectivity promoters in heterogeneous polymerizations of &agr;-olefins. Also described are polymerization methods using these catalyst systems.