Metal organic catalysts for polymerizing unsaturated compounds

US6593437B1 · kind B1 · utility

Assignee

• Basell Polyolefine GmbH · DE

Inventors

• Andrei Gonioukh · Liblar, DE
• Wolfgang Micklitz · Neustadt, DE
• Benno Bildstein · Innsbruck, AT
• Michael Malaun · Munich, DE
• Andreas Hradsky · Innsbruck, AT

Key dates

• Filing date: Oct 24, 2001
• Grant date: Jul 15, 2003
• Expiry date: Oct 24, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2410/03
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for preparing 1,2-diimine compounds of the formula I where R1 and R2 are, independently of one another, alkyl, aryl or metallocenyl radicals, and R3, R4 are, independently of one another, H, alkyl or aryl radicals or R3 and R4 are joined so as to form, with inclusion of the two imine carbon atoms, a 5- to 8-membered ring which may be saturated or unsaturated and may be unsubstituted or substituted by any hydrocarbon radicals. The process involves reacting 1,2-dicarbonyl compounds with primary amines, which have been activated with trialkylaluminum compounds prior to the reaction with the 1,2-dicarbonyl compounds. 1,2-Diimine compounds of the formula I in which R1 and R2 are, independently of one another, metallocenyl radicals can be used to prepare metal complexes which can be used as catalysts in a process for the polymerization of unsaturated compounds.