Aromatic copolyether amide which can be processed as a thermopla

Details Aromatic copolyether amide which can be processed as a thermopla Aromatic copolyether amide which can be processed as a thermopla

1989-05-26

1990-10-30

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528172, 528173, 528185, C08G 6300, C08G 7500

Patent

active

049669559

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.degree. C. The copolyether amide is prepared by a low-temperature solution, solid, interface or melt condensation process. The moldings produced therefrom in the form of filaments, wires, films and other moldings are obtained by processing the pulverulent copolyether amides or their solutions.

REFERENCES:
patent: 4721772 (1988-01-01), Ueno et al.
patent: 4847354 (1989-07-01), Keil et al.

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