Supported olefin polymerization catalyst

US7442750B2 · kind B2 · utility

Assignee

• Innovene Europe Limited · GB

Inventors

• Grant Berent Jacobsen · Houston, US
• Brian Stephen Kimberley · Mariax, FR
• Claudine Viviane Lalanne-Magne · Fos-sur-Mer, FR
• Sergio Mastroianni · Brussels, BE

Key dates

• Filing date: Dec 3, 2003
• Grant date: Oct 28, 2008
• Expiry date: Dec 3, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F4/6592
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Supported catalyst systems are provided comprising (a) a transition metal compound, (b) an activator comprising (iii) an aluminoxane or (iv) a Group lilA metal or metalloid compound, and (c) a support material comprising an inorganic metal oxide, inorganic metal halide or polymeric material or mixtures thereof characterised in that the support material has been pretreated with a source of a transition metal atom. The preferred transition metal compounds are metallocenes and the source of the transition metal atom is typically a ferrous or cupric metal salt. The supported catalyst systems show improved activity and also may reduce fouling in gas phase fluidised bed processes.