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. 08, 2014
Filed:
Dec. 23, 2011
Guido Pampaloni, Pontedera, IT;
Filippo Renili, Pisa, IT;
Anna Sommazzi, Santa Margherita-Genoa, IT;
Fabio Marchetti, Pisa, IT;
Francesco Masi, Sant Angelo Lodigiano-Lodi, IT;
Mario Polesello, Ferrara, IT;
Guido Pampaloni, Pontedera, IT;
Filippo Renili, Pisa, IT;
Anna Sommazzi, Santa Margherita-Genoa, IT;
Fabio Marchetti, Pisa, IT;
Francesco Masi, Sant Angelo Lodigiano-Lodi, IT;
Mario Polesello, Ferrara, IT;
Versalis S.p.A., San Donato Milanese, IT;
Abstract
Metal alkyl-arene having general formula (I) or (Ia): M (η-arene)AlXR(I) M (η-arene)AlXR(Ia) wherein: —M represents zirconium (Zr), hafnium (Hf), or mixtures thereof, preferably zirconium; —arene represents a benzene, or a benzene 10 substituted with from 1 to 6 linear or branched C-Calkyl groups, or mixtures thereof; —X represents a halogen atom selected from chlorine, bromine, fluorine, iodine, preferably chlorine; —R represents a linear or branched C-Calkyl group; —q is a number ranging from 2 to 6, preferably 3 for a metal alkyl-arene having general formula (I), 2 for a metal alkyl-arene having general formula (Ia); —r is a number ranging from 1 to 20, preferably 9 for a metal alkyl-arene having general formula (I), 6 for a metal alkyl-arene having general formula (Ia); —s is a number ranging from 1 to 6, preferably 2. Said metal alkyl-arene can be advantageously used for the preparation of solid components of catalysts for the (co)polymerization of α-olefins.