High impact strength molding compositions based on polyalkylene terephthalates

US4891406A · kind A · utility

Assignee

• Huels Aktiengesellschaft · DE

Inventors

• Josef Bittscheidt · Marl, DE
• Gernot Horlbeck · Haltern, DE
• Salih Mumcu · Marl, DE

Key dates

• Filing date: Jul 9, 1987
• Grant date: Jan 2, 1990
• Expiry date: Jul 9, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L67/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The production of high impact strength molding compositions obtained by thermal treatment of synthetic resin mixtures containing predominantly polyalkylene terephthalate, in the solid form, characterized in that the synthetic resin mixture contains PA0 A. 70-95% or 60-97% by weight of polyalkylene terephthalate and PA0 B. when A is 70-95%, 5-30% by weight of a conventional, elasticizing acrylate graft copolymer, a conventional .alpha.-olefin copolymer or a conventional polyether amide, or when A is 60-97%, 3-40% of a conventional polyether ester amide, PA0 and that the synthetic resin mixture is treated at temperatures of 15.degree.-60.degree. C. below the melting point of the pure component A in an inert gas atmosphere.