Thermoplastic polypropylene-polyamide molding compositions of high toughness, rigidity and heat-distortion resistance, and the preparation thereof

US5162422A · kind A · utility

Assignee

• BASF SE

Inventors

• Dietrich Lausberg · Ludwigshafen, DE
• Wolfgang Mueller · Wappingers Falls, US
• Erhard Seiler · Ludwigshafen, DE

Key dates

• Filing date: Jun 8, 1990
• Grant date: Nov 10, 1992
• Expiry date: Jun 8, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L51/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Novel polypropylene-polyamide molding compositions which comprise, based on 100 parts by weight of the molding compositions, PA1 A) 10 to 89.9 parts by weight of one or more polypropylene homopolymer and/or copolymer, PA1 B) 10 to 89.9 parts by weight of one or more polyamide, PA1 C) 0.1 to 5.0 parts by weight of one or more olefinically unsaturated carboxylic acid and/or one or more olefinically unsaturated carboxylic acid derivate, PA1 D) 0 to 3.0 parts by weight of an impact modifier, and PA1 E) 0 to 60.0 parts by weight of a reinforcing agent and/or additive, are prepared by melting together components (A), (C) and, if desired (D) at from 200.degree. to 300.degree. C. in a first reaction step and then, in a second reaction step, introducing component (B) and, if appropriate, components (D) and/or (E) into the modified melt obtained, and melting together the components. The molding compositions obtained are used for the production of moldings.