Fibers of arylene oxadiazole/arylene N-alkylhydrazide copolymer

Details Fibers of arylene oxadiazole/arylene N-alkylhydrazide copolymer Fibers of arylene oxadiazole/arylene N-alkylhydrazide copolymer

1979-01-15

1980-05-13

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

152330R, 264176F, 2642907, C08G 7308

Patent

active

042029627

ABSTRACT:
High strength fibers of arylene oxadiazole/arylene N-alkylhydrazide copolymers are prepared by a unique solution spinning process, whereby an arylene oxadiazole/arylene N-alkyloxadiazolium hydrosulfate copolymer in sulfuric acid or oleum is extruded into an aqueous coagulation medium in which concurrently a fiber is formed and the latter-mentioned copolymer undergoes a chemical transformation to provide the first-mentioned copolymer.

REFERENCES:
patent: 3414645 (1968-12-01), Morgan
patent: 3632548 (1972-01-01), Preston
patent: 3642708 (1972-02-01), Sekiguchi et al.
patent: 3644283 (1972-02-01), Bach
patent: 3644297 (1972-02-01), Sekiguchi et al.
patent: 3660361 (1972-05-01), Bach
patent: 3671542 (1972-06-01), Kwolek
patent: 3673143 (1972-06-01), Bair
patent: 3796693 (1974-03-01), Morgan
patent: 3817941 (1974-06-01), Bair et al.
patent: 3819587 (1974-06-01), Kwolek

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