Method for retarded anionic polymerization

US6444767B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Christian Schade · Ludwigshafen, DE
• Wolfgang Fischer · Meerbusch, DE
• Hermann Gausepohl · Mutterstadt, DE
• Rainer Klostermann · Ketsch, DE
• Volker Warzelhan · Bad Dürkheim, DE
• Michel Fontanille · Montmorency, FR
• Alain Deffieux · Talence, FR
• Philippe Desbois · Maikammer, DE

Key dates

• Filing date: Aug 14, 2000
• Grant date: Sep 3, 2002
• Expiry date: Aug 14, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F236/10
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

In a process for the homopolymerization of vinylaromatic monomers or the copolymerization of vinylaromatic monomers and dienes, the monomers are polymerized in the presence of at least one alkali metal organyl, at least one magnesium organyl and at least one aluminum organyl. The invention also provides an initiator composition for carrying out the process.