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:
Nov. 28, 2006
Filed:
Nov. 28, 2002
Michael J. Elder, Heidelbeg-Kirchheim, DE;
Robert L. Jones, Jr., Heidelbeg-Kirchheim, DE;
Michael J. Elder, Heidelbeg-Kirchheim, DE;
Robert L. Jones, Jr., Heidelbeg-Kirchheim, DE;
Basell Polyolefine GmbH, Wesseling, DE;
Abstract
A metallocene compound of formula (I) wherein M is zirconium, hafnium or titanium; X is hydrogen, halogen, or a hydrocarbyl radical optionally containing heteroatoms; R, R, Rand R, are hydrogen or hydrocarbyl radicals; Ris a hydrocarbil radical; L is a divalent bridging group T is a radical of formula (II), (III), (IV) or (V), wherein Rand Rare a hydrogen atom or a hydrocarbyl radical. with the proviso that at least one group among R, R, Rand Ris a group of formula C(R)Rwherein R, equal to or different from each other, is an hydrocarbyl radical; and Ris hydrogen or an hydrocarbyl radical. These compounds are fit for the preparation of propylene copolymers.