Olefin polymerization catalyst, process and polyolefin product

US4333851A · kind A · utility

Assignees

• BP Chemicals Limited · US
• The University of Nottingham · GB

Inventors

• John G. Speakman · Tipperary Grove, GB
• Nicholas P. Wilkinson · Weybridge, GB

Key dates

• Filing date: Jul 7, 1980
• Grant date: Jun 8, 1982
• Expiry date: Jul 7, 2000

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F10/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A supported Ziegler catalyst prepared by reacting, under substantially anhydrous conditions, a refractory oxide support material having acidic surface hydroxyl groups, e.g. silica, and an organo metallic compound, e.g. a trialkyl aluminium compound, separating any unreacted organo metallic compound and impregnating the solid product with a halogen-containing titanium compound and a halogen-containing vanadium compound. The catalyst, preferably together with a conventional Ziegler catalyst activator, e.g. an aliminium alkyl, is employed to polymerize 1-olefins, for example ethylene.