Process for preparing rubber-modified moulding compounds

US6211297A · kind A · utility

Assignee

• BASF SE

Inventors

• Graham Edmund Mc Kee · Neustadt, DE
• Stephan Jungling · Mannheim, DE
• Volker Warzelhan · Bad Dürkheim, DE
• Hermann Gausepohl · Mutterstadt, DE

Key dates

• Filing date: Jun 8, 1999
• Grant date: Apr 3, 2001
• Expiry date: Jun 8, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F20/12
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Preparation of rubber-modified molding compositions comprises PA1 a.sub.1) anionic polymerization of a mixture (A) comprising acrylate derivatives or methacrylate derivatives or acrylate derivatives and methacrylate derivatives and a solvent, if desired comprising olefinically unsaturated compounds which are not an acrylate derivative or a methacrylate derivative, or PA1 a.sup.2) sequential anionic polymerization of acrylate derivatives or methacrylate derivatives or acrylate derivatives and methacrylate derivatives in the presence of a solvent which, if desired, comprises olefinically unsaturated compounds to give block copolymers, and PA1 b) subjecting the reaction mixture obtained in a.sub.1) or a.sub.2) or a.sub.1) and a.sub.2) to a free-radical-initiated polymerization, if desired after the addition of unsaturated compounds.