Thermoplastic moulding compounds

US6162867A · kind A · utility

Assignee

• BASF SE

Inventors

• Norbert Güntherberg · Speyer, DE
• Konrad Knoll · Mannheim, DE
• Martin Weber · Maikammer, DE
• Gerhard Lindenschmidt · Leimen, DE

Key dates

• Filing date: Mar 17, 1999
• Grant date: Dec 19, 2000
• Expiry date: Mar 17, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S525/902
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to thermoplastic molding compositions comprising PA1 A) from 30 to 98% by weight of a graft copolymer comprising PA2 a.sub.K) from 30 to 90% by weight of an elastomeric graft core, PA2 a.sub.S) from 10 to 70% by weight of a graft shell comprising PA3 a.sub.S /1) from 50 to 100% by weight of a styrene compound or a C.sub.1 -C.sub.8 -alkyl acrylate or methacrylate, or a mixture thereof, and PA3 a.sub.S /2) from 0 to 50% by weight of one or more other monomers, PA1 B) from 1 to 50% by weight of a thermoplastic polymer and PA1 C) from 1 to 70% by weight of an elastomeric block copolymer prepared by anionic polymerization of the monomers with addition of a potassium compound soluble in non-polar solvents (Step 1) followed by hydrogenation of all or virtually all the olefinic double bonds of the polymer obtained in Step 1, as described in greater detail herein.