Drawing polyoxadiazoles filaments

Details Drawing polyoxadiazoles filaments Drawing polyoxadiazoles filaments

1975-09-05

1977-07-12

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

260 7841, 264184, 264290R, D01D 512

Patent

active

040354652

ABSTRACT:
A method of making a drawn filament from a hot drawable poly-phenylene-1,3,4-oxadiazole having p-phenylene radicals or p-and m-phenylene radicals, with substituted bromine, wherein a solution of the polymer is dry jet wet spun into a coagulant, the filament washed and dried, and drawn at a temperature of at least 350.degree. C at a draw ratio of at least 6:1.

REFERENCES:
patent: 3414645 (1968-12-01), Morgan
patent: 3775382 (1973-11-01), Brydon
patent: 3796693 (1974-03-01), Morgan et al.
patent: 3869429 (1975-03-01), Blades
patent: 3886251 (1975-05-01), Sekiguchi et al.
patent: 3944522 (1976-03-01), Tohyama et al.

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