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:
Jul. 10, 2007
Filed:
Jun. 20, 2002
Cornelia Fritze, Frankfurt, DE;
Luigi Resconi, Ferrara, IT;
Jörg Schulte, Frankfurt, DE;
Simona Guidotti, Malalbergo, IT;
Cornelia Fritze, Frankfurt, DE;
Luigi Resconi, Ferrara, IT;
Jörg Schulte, Frankfurt, DE;
Simona Guidotti, Malalbergo, IT;
Basell Polyolefine GmbH, Wesseling, DE;
Abstract
A metallocene compound of formula (I): wherein M is zirconium, titanium and hafnium; X is a hydrogen atom, a halogen atom or a hydrocarbon radical; Ris a linear C-C-alkyl radical; Ris a hydrogen atom or hydrocarbon R, R, R, R, R, and R, are hydrogen atoms or hydrocarbon radicals, A is a sulphur (S) atom or an oxygen (O) atom; Q is a radical of formula (II), (III) or (IV) being bonded to the indenyl at the position indicated by the symbol *; (II), (III), (IV) wherein Tis a sulphur atom, an oxygen (O) atom or a NR; R, Rand Rare hydrogen atoms or hydrocarbon radicals; T, T, T, T, and Tare carbon atoms (C) or nitrogen atoms (N); m, m, m, mand mare 0 or 1; R, R, R, Rand Rare hydrogen atoms or hydrocarbon radicals with the provisos that at least one of R, R, R, Rand Ris different from hydrogen atoms, and that no more than two of T, T, T, Tand Tare nitrogen atoms.