Flameproofed thermoplastic polyesters

US5464894A · kind A · utility

Assignee

• BASF SE

Inventors

• Brigitte Gareiss · Grünstadt, DE
• Petra Baierweck · Schifferstadt, DE
• Christoph Plachetta · Schifferstadt, DE
• Karlheinz Ulmerich · Lambsheim, DE

Key dates

• Filing date: Mar 31, 1994
• Grant date: Nov 7, 1995
• Expiry date: Mar 31, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K3/26
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Flameproofed thermoplastic molding materials are obtainable by mixing from 20 to 70% by weight of a mixture of carbonates of metals of the 2nd main group of the Periodic Table of Elements in a melt of from 10 to 80% by weight of a polyester prepolymer having a viscosity number of from 40 to 100 ml/g and subsequently carrying out solid-phase postcondensation.