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:
Jun. 24, 2014
Filed:
Nov. 30, 2009
Eleonora Ciaccia, Ferrara, IT;
Iakovos Vittorias, Mainz, DE;
Shahram Mihan, Bad Soden, DE;
Lenka Lukesova, Frankfurt, DE;
Dieter Lilge, Limburgerhof, DE;
Maclovio Herrera Salinas, Frankfurt, DE;
Gerhardus Meier, Frankfurt, DE;
Gerd Mannebach, Münstermaifeld, DE;
Eleonora Ciaccia, Ferrara, IT;
Iakovos Vittorias, Mainz, DE;
Shahram Mihan, Bad Soden, DE;
Lenka Lukesova, Frankfurt, DE;
Dieter Lilge, Limburgerhof, DE;
Maclovio Herrera Salinas, Frankfurt, DE;
Gerhardus Meier, Frankfurt, DE;
Gerd Mannebach, Münstermaifeld, DE;
Bassell Polyolefine GmbH, Wesseling, DE;
Abstract
New ethylene polymers having broad molecular weight distribution and long-chain branching, above all at high molecular weight fractions; the polymers have strain hardening equal or higher than 1.4 (at constant elongational rate of 0.5 s, at 150° C.), branching index g' equal or lower than 0.9 (at Mw of 2·10g/mol). The polymers are prepared by using a mixed catalyst system comprising a polymerization catalyst based on a late transition metal component having a tridentate ligand, and a Ziegler polymerization catalyst annealed at a temperature higher than 100° C., for a time of at least 10 minutes.