Wet spun hydroxyethylated polybenzimidazole fibers

Details Wet spun hydroxyethylated polybenzimidazole fibers Wet spun hydroxyethylated polybenzimidazole fibers

1987-03-20

1989-03-21

Kendell, Lorraine T.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

21050028, 21050023, 264 41, 264183, 264184, 2642108, 428376, D02G 300

Patent

active

048142280

ABSTRACT:
Hydroxyethylated polybenzimidazole fibers are produced by a wet jet/wet spinning or by a dry jet/wet spinning process. A spinning solution of hydroxyethylated polybenzimidazole is extruded vertically downward through a spinneret into a liquid coagulation bath. The resulting fibers have pore sizes ranging from about 5 angstroms up to about 100 angstroms and are quite useful as ultra filters for molecules with a broad range of molecular weight.

REFERENCES:
patent: 3851025 (1974-11-01), Ram
patent: 4599388 (1986-07-01), Bower et al.
patent: 4734466 (1988-03-01), Kindler et al.

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