Supported chromium catalyst and its use for preparing homopolymers and copolymers of ethylene

US7803736B2 · kind B2 · utility

Assignee

• Basell Polyolefine GmbH · DE

Inventors

• Wolfgang Rohde · Speyer, DE
• Guido Funk · Worms, DE
• Andreas Haufe · Ludwigshafen, DE
• Anke Bold · Dirmstein, DE
• Neil Nadalin · Eppstein, DE

Key dates

• Filing date: Dec 9, 2003
• Grant date: Sep 28, 2010
• Expiry date: Dec 9, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F210/16
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for preparing supported, titanized chromium catalysts is disclosed. The process comprises A) bringing a support material into contact with a protic medium comprising a titanium compound and a chromium compound; B) optionally removing the solvent; C) optionally calcining the precatalyst obtained after step B); and D) optionally activating the precatalyst obtained after step B) or C) in an oxygen-containing atmosphere at from 400° C. to 1100° C.