Metal alkyl-arenes and processes for the preparation thereof

US8772521B2 · kind B2 · utility

Assignee

• Versalis S.P.A. · IT

Inventors

• Guido Pampaloni · Pontedera, IT
• Filippo Renili · Cascina Palazzi, IT
• Anna Sommazzi · Novara, IT
• Fabio Marchetti · Povo, IT
• Francesco Masi · San Donato Milanese, IT
• Mario Polesello · Oderzo, IT

Key dates

• Filing date: Dec 23, 2011
• Grant date: Jul 8, 2014
• Expiry date: Dec 23, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F10/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Metal alkyl-arene having general formula (I) or (Ia): M (η6-arene)2AlqXrRs (I) M (η6-arene)AlqXrRs (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 C1-C6 alkyl groups, or mixtures thereof; —X represents a halogen atom selected from chlorine, bromine, fluorine, iodine, preferably chlorine; —R represents a linear or branched C1-C15 alkyl 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.