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:
May. 19, 2009
Filed:
Nov. 14, 2003
Luigi Resconi, Ferrara, IT;
Anteo Pelliconi, Occhiobello, IT;
Enea Garagnani, Ferrara, IT;
Basell Polyolefine GmbH, Wesseling, DE;
Abstract
A process comprising contacting 1-butene and one or more alpha-olefins under polymerization conditions in the presence of a catalyst system obtainable by contacting: (A) a metallocene compound of formula (I) wherein: M is an atom of a transition metal; p is an integer from 0 to 3; X, same or different, are hydrogen atoms, halogen atoms, or an hydrocarbon group; L is a divalent bridging group; Rand Rare hydrocarbon groups; Rand Rare hydrogen atoms or hydrocarbon groups; Tand T, equal to or different from each other are a moiety of formula (II), (III) or (IV):wherein: R, R, R, Rand R, equal to or different from each other, are hydrogen or hydrocarbon groups; and (B) an alumoxane or a compound able to form an alkylmetallocene cation.