Aromatic copolyether amide which can be processed as a...

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

C - Chemistry, Metallurgy

08

G

402/225, 402/238

C08G 69/32 (2006.01) C08G 69/40 (2006.01) C08G 69/42 (2006.01)

Patent

CA 1338649

Aromatic copolyether amide which can be processed as a thermoplastic, process for its preparation and its use for the production of moldings The structure of the aromatic copolyether amide which can be processed as a thermoplastic comprises recurring units of the formulae -CO-Ar1-CO- (A), -NH-Ar1-O-Ar1-X-Ar1-O-Ar1- NH (B) and -NH-Ar2-NH- (C) in which Ar1 denotes a diva- lent, unsubstituted or substituted aromatic radical having 6 carbon atoms which is linked in the p-position, X represents a 2,2-propylidene link and Ar2 is identical with Ar1 or is Ar1 which is linked in the m-position, or is the -Ar1-Z-Ar1- group in which Z is a direct bond or is a radical -CH2-, -C(CH3) 2-, -SO2-, -CO-, -O-, -CH=CH-, -CO-NH- or -O-Ar1-O- or the radical Image in which R represents hydrogen or a branched or unbran- ched alkyl radical having 1-4 carbon atoms. The propor- tion 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 -SO2-, up to 75 mol-%. The Staudinger index [?] of the copolyether amide is in the range from 50 to 1000 cm3/g, and the value of the glass transition temperature is above 200°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 pul- verulent copolyether smides or their solutions.

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