Aromatic copolyether amide which can be processed as a thermoplastic, process for its preparation, and its use for the production of molding

US4966955A · 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: Oct 30, 1990
• Expiry date: May 26, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G69/40
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The structure of the aromatic copolyether amide which can be processed as a thermoplastic comprises recurring units of the formulae --CO--Ar.sup.1 --CO-- (A), --NH--Ar.sup.1 --O--Ar.sup.1 --X--Ar.sup.1 --O--Ar.sup.1 --NH (B) and --NH--Ar.sup.2 --NH-- (C) in which Ar.sup.1 denotes a divalent, unsubstituted or substituted aromatic radical having 6 carbon atoms which is linked in the p-position, X represents a 2,2-propylidene link and Ar.sup.2 is identical with Ar.sup.1 or is Ar.sup.1 which is linked in the m-position, or is the --Ar.sup.1 --Z--Ar.sup.1 -- group in which Z is a direct bond or is a radical --CH.sub.2 --, --C(CH.sub.3).sub.2 --, --SO.sub.2 --, --CO--, --O--, --CH.dbd.CH--, --CO--NH-- or --O--Ar.sup.1 --O-- or the radical ##STR1## in which R represents hydrogen or a branched or unbranched alkyl radical having 1-4 carbon atoms. The proportion of units (A) and of the sum of units (B) and (C) is each 100 mol-%, the proportion of units (C) being up to 50 mol-% and, if Z represents --SO.sub.2 --, up to 75 mol-%. The Staudinger index [.eta.] of the copolyether amide is in the range from 50 to 1000 cm.sup.3 /g, and the value of the glass transition temperature is above 200.degr…