Chemistry of inorganic compounds – Carbon or compound thereof – Elemental carbon
Patent
1980-10-27
1983-08-09
Meros, Edward J.
Chemistry of inorganic compounds
Carbon or compound thereof
Elemental carbon
4234472, 4234474, 4234475, D01F 922
Patent
active
043978312
ABSTRACT:
An acrylonitrile based fiber is disclosed which is composed of copolymers comprising at least 96 mole % of acrylonitrile and 1.times.10.sup.-2 to 70.times.10.sup.-2 mole % of a vinyl component or vinyl components containing acidic groups, and containing a specific amount of zinc. The fiber is used in production of oxidized or flame resistant fiber. The oxidized or flame resistant fiber is produced by heat-treating or oxidizing the acrylonitrile based fiber in an oxidation furnace equipped with a plurality of roller units while limiting the shrinkage of the acrylonitrile based fiber within specific limits as the oxidation proceeds. On carbonizing the above oxidized or flame resistant fiber while limiting the shrinkage thereof a carbon fiber which is of high strength and low fluffing is obtained.
REFERENCES:
patent: 4069297 (1978-01-01), Saito et al.
patent: 4197279 (1980-04-01), Saito et al.
Ogawa Hiroyasu
Saito Kazuhisa
Meros Edward J.
Toho Belson Co., Ltd.
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