Thermoplastically processible aromatic polyetheramide from 2,2-bis(4'-amino phenoxy phenyl) propane and terephthalic acid

US5039779A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Harald Cherdron · Niedernhausen, DE
• Hellmuth Deckers · Ingelheim am Rhein, DE
• Friedrich Herold · Hofheim, DE
• Reiner Hess · Gersthofen, DE

Key dates

• Filing date: May 26, 1989
• Grant date: Aug 13, 1991
• Expiry date: May 26, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G69/32
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A thermoplastically processible aromatic polyetheramide, in which the structure comprises the repeating units of the formulae EQU --CO--AR--CO-- (A) and EQU --NH--Ar--O--Ar--X--Ar--O--Ar--NH-- (B) in which Ar signifies a bivalent unsubstituted or substituted aromatic radical having 6 carbon atoms, and whose linkages are in the p-position and X denotes a 2,2-propylidene linkage, the polyetheramide having an intrinsic viscosity [.eta.] in the range of 50 to 750 cm.sup.3 /g, and a glass transition temperature of above 200.degree. C., and a process for its production. The production of the polyetheramide is carried out by a low temperature solution condensation process, a solid phase condensation process, an interfacial condensation process or a melt condensation process. The polyetheramide is used for the production of molded articles in the form of filaments, wires, films and other moldings, which are produced by extrusion, press-molding or injection molding of the dry polyetheramide in powder form or by processing of solutions of the polyetheramide.