Thermoplastic molding materials

US5877258A · kind A · utility

Assignee

• BASF SE

Inventors

• Norbert Güntherberg · Speyer, DE
• Martin Weber · Maikammer, DE
• Freddy Gruber · Offenbach, DE
• Gerhard Lindenschmidt · Leimen, DE

Key dates

• Filing date: Oct 25, 1996
• Grant date: Mar 2, 1999
• Expiry date: Oct 25, 2016

Classification

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

Abstract

Thermoplastic molding materials comprise PA1 A) from 30 to 98% by weight of a graft polymer of PA2 a.sub.K) from 30 to 90% by weight of an elastomeric graft core, obtainable by copolymerization of PA3 a.sub.K /1) from 80 to 99.99% by weight of a C.sub.1 -C.sub.10 -alkyl ester of acrylic acid, PA3 a.sub.K /2) from 0.01 to 20% by weight of a crosslinking monomer and PA3 a.sub.K /3) from 0 to 40% by weight of one or more further monomers, and PA2 a.sub.S) from 10 to 70% by weight of a graft shell of PA3 a.sub.S /1) from 50 to 100% by weight of a styrene compound of the general formula ##STR1## where R.sup.1 and R.sup.2 are each hydrogen or C.sub.1 -C.sub.8 -alkyl, and/or of a C.sub.1 -C.sub.8 -alkyl ester of acrylic acid or methacrylic acid, and PA3 a.sub.S /2) from 0 to 50% by weight of one or more further monomers, PA1 B) from 1 to 50% by weight of a thermoplastic polymer of PA2 b.sub.1) from 50 to 100% by weight of styrene and/or .alpha.-methylstyrene, PA2 b.sub.2) from 0 to 50% by weight of acrylonitrile and PA2 b.sub.3) from 0 to 50% by weight of one or more further monomers, and PA1 C) from 1 to 70% by weight of a copolymer of PA2 c.sub.1) from 30 to 90% by weight of styrene and…