Low individual color thermoplastic molding material

US6323279A · kind A · utility

Assignee

• BASF SE

Inventors

• Norbert Güntherberg · Speyer, DE
• Jurgen Koch · Refrath, DE
• Peter Ittemann · Lampertheim, DE
• Joachim Seibring · Freinsheim, DE
• Sven Grabowski · Ludwigshafen, DE
• Graham E. McKee · Ludwigshafen, DE
• Norbert Mosbach · Frankenthal (Pfalz), DE
• Bernhard Czauderna · Hirschberg, DE
• Norbert Niessner · Friedelsheim, DE
• Hartmut Heinen · Ludwigshafen, DE

Key dates

• Filing date: Dec 30, 1999
• Grant date: Nov 27, 2001
• Expiry date: Dec 30, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A thermoplastic molding composition having little intrinsic color is produced from a graft copolymer and a thermoplastic polymer. The graft copolymer is produced from a soft elastomeric particulate graft base obtained by polymerization of a conjugated diene alone or with a small amount of a monoethylenically unsaturated monomer, upon which is grafted a vinylaromatic monomer and acrylonitrile and optionally another monoethylenically unsaturated monomer. The thermoplastic polymer is a copolymer of a vinylaromatic monomer and acrylonitrile and optionally an additional monoethylenically unsaturated monomer. The thermoplastic molding composition has a low level of intrinsic color coupled with good mechanical properties and can be processed by, for example, extrusion, injection molding, calendaring, blow molding, compression molding, or sintering.