Method of producing rubber compositions in styrene solutions with sterically superior chelate catalysts

US6518379B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Stephan Jungling · Mannheim, DE
• Christian Schade · Ludwigshafen, DE
• Hermann Gausepohl · Mutterstadt, DE
• Volker Warzelhan · Bad Dürkheim, DE
• Rainer Moors · Schifferstadt, DE
• Hansjörg Schäch · Haßloch, DE
• Joachim Queisser · Mannheim, DE
• Gerrit Luinstra · Mannheim, DE
• Jürgen Demeter · Bischofswerda, DE

Key dates

• Filing date: Nov 14, 2001
• Grant date: Feb 11, 2003
• Expiry date: Nov 14, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S525/942
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

In a process for polymerizing dienes in a solvent comprising vinylaromatic monomers, the polymerization is carried out in the presence of a metal compound of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo or W as catalyst and a Lewis acid as cocatalyst and, if desired, an alkylating agent and, if desired, a regulator. This process can be used for preparing high-impact polystyrene, acrylonitrile-butadiene-styrene copolymers or methyl methacrylate-butadiene-styrene copolymers.