Hermoplastic molding material of improved toughness

US5120788A · kind A · utility

Assignee

• BASF SE

Inventors

• Friedrich Seitz · Friedelsheim, DE
• Karl Ruppmich · Ludwigshafen, DE

Key dates

• Filing date: Feb 20, 1991
• Grant date: Jun 9, 1992
• Expiry date: Feb 20, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L51/003
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A thermoplastic molding material containing (based on the sum of A+B+C) PA0 A: from 1 to 30% by weight of one or more elastomeric polymers A having a mean particles size of from 30 to 1000 nm and comprising, based on A, PA1 A1: from 50 to 99.9% by weight of one or more alkyl acrylates A1 having from 1 to 8 carbon atoms in the alkyl radical, PA1 A2: from 0.1 to 5% by weight of one or more polyfunctional, crosslinking monomers A2 and PA1 A3: up to 50% by weight of one or more monoethylenically unsatuated monomers A3, as the graft base, PA0 B: from 5 to 40% by weight of shells B grafted onto the elastomeric polymer A and comprising, based on B, PA1 B1: from 30 to 90% by weight of one or more vinylaromatic monomers B1, PA1 B2: from 5 to 40% by weight of one or more polar, copolymerizable, ethylenically unsaturated monomers B2, and PA1 B3: from 5 to 30% by weight of one or more alkyl acrylates B3 having from 7 to 20 carbon atoms in the alkyl radical, and PA0 C: from 30 to 94% by weight of a copolymer C comprising C1: one or more vinyl-aromatic monomers C1 and PA1 C2: one or more polar, copolymerizable, ethylenically unsaturated monomers C2.