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. 13, 2013
Filed:
Sep. 06, 2012
Anita Dimeska, Cincinnati, OH (US);
Ralph-dieter Maier, White Plains, NY (US);
Nicola Stephanie Paczkowski, Dirmstein, DE;
Matthew Grant Thorn, Lebanon, OH (US);
Andreas Winter, Neuleininger, DE;
Joerg Schulte, Frankfurt, DE;
Thorsten Sell, Worms, DE;
Anita Dimeska, Cincinnati, OH (US);
Ralph-Dieter Maier, White Plains, NY (US);
Nicola Stephanie Paczkowski, Dirmstein, DE;
Matthew Grant Thorn, Lebanon, OH (US);
Andreas Winter, Neuleininger, DE;
Joerg Schulte, Frankfurt, DE;
Thorsten Sell, Worms, DE;
Lummus Novolen Technology GmbH, Mannheim, DE;
Abstract
Certain metallocene compounds are provided that, when used as a component in a supported polymerization catalyst under industrially relevant polymerization conditions, afford high molar mass homo polymers or copolymers like polypropylene or propylene/ethylene copolymers without the need for any α-branched substituent in either of the two available 2-positions of the indenyl ligands. The substituent in the 2-position of one indenyl ligand can be any radical comprising hydrogen, methyl, or any other C-Chydrocarbon which is not branched in the α-position, and the substituent in the 2-position of the other indenyl ligand can be any C-Chydrocarbon radical with the proviso that this hydrocarbon radical is branched in the β-position. This metallocene topology affords high melting point, very high molar mass homo polypropylene and very high molar mass propylene-based copolymers. The activity/productivity levels of catalysts including the metallocenes of the present invention are exceptionally high.