Filler-fortified polyalkyleneterephthalate molding compositions

US4163002A · kind A · utility

Assignee

• Dynamit Nobel GmbH · DE

Inventors

• Werner Pohl · Neubulach, DE
• Ernst Schainberg · Troisdorf, DE
• Werner Schmidt · Rengsdorf, DE
• Gunter Tappe · Troisdorf, DE

Key dates

• Filing date: Jun 20, 1977
• Grant date: Jul 31, 1979
• Expiry date: Jun 20, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K3/013
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for preparing a filler-fortified polyalkyleneterphthalate molding composition which comprises mixing a filler with a precondensate of poly-(1,4-butylene)-terephthalate and/or poly-(1,3-propylene)-terephthalate, forming the resultant mixture into a shape and thereafter polymerizing the precondensate by solid-phase condensation under solid-phase condensation conditions; a molding composition prepared by such a process comprising poly-(1,4-butylene)-terephthalate and/or poly-(1,3-propylene)-terephthalate in an amount of 20 to 98 weight percent and 2 to 80 weight percent of a fortifying filler, the amounts based upon the combined amount of polyester and fortifying filler; a shaped object prepared from molding such a molding composition and the process for molding such a molding composition into a molded shaped article.