Basic gas absorptive fiber and production thereof

Details Basic gas absorptive fiber and production thereof Basic gas absorptive fiber and production thereof

1997-06-27

1998-06-16

Edwards, Newton

Stock material or miscellaneous articles

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

Rod, strand, filament or fiber

428400, 264182, 5253291, 811565, D02G 300, D06M 2300, D01F 618, C08F 2044

Patent

active

057667578

ABSTRACT:
Disclosed herein is a fiber capable of basic gas absorption and easy regeneration. Disclosed also herein is a process for producing said fiber. The basic gas absorptive fiber is an acrylic fiber characterized by a specific amount of nitrogen which is increased by crosslinking with hydrazine, a specific amount of carboxyl groups and amido groups resulting from modification of nitrile groups, and a specific value of tensile strength. It is prepared from acrylic fiber by crosslinking with hydrazine and subsequent hydrolysis and conversion of hydroxyl groups into carboxylic acid. It has good processability and can be used repeatedly.

REFERENCES:
patent: 5292827 (1994-03-01), Tanaka et al.
Database WPI, Section Ch, Derwent Publications Ltd., London; Class A14, AN 72-73385T XP002019467 & SU-A-332 148 (Dorokhina is Zverev MP BA) *abstract* Nov. 1972.

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