Thermoplastic moulding materials based on polyethylene terephthalate for use in injection moulding of parts

US6046264A · kind A · utility

Assignee

• Emtec Magnetics GmbH · DE

Inventors

• Norbert Muller · Tamm, DE
• Jochen Eicher · Monsheim, DE
• Karl-Heinz Sartor · Schwanau, DE

Key dates

• Filing date: Jun 16, 1998
• Grant date: Apr 4, 2000
• Expiry date: Jun 16, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29C45/0001
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A thermoplastic molding material based on polyethylene terephthalate contains preferably from 37 to 96% by weight of PET, from 1 to 20% by weight of a polymer material containing preferably polyurethane, and from about 4 to 30% by weight of a pigment-like reinforcing agent comprising metal and/or metal oxide. The molding materials are suitable for processing by injection molding, and the shaped articles produced therefrom have advantageous properties, in particular with regard to a higher density compared with a similar polybutylene terephthalate (PBT) having glass fibers as a filler. The thermoplastic molding material can advantageously be used for small parts and for housing parts for electronic equipment and data devices.