Acrylic fiber suitable for preparing carbon or graphite fibers

Details Acrylic fiber suitable for preparing carbon or graphite fibers Acrylic fiber suitable for preparing carbon or graphite fibers

1985-10-31

1987-10-06

Schofer, Joseph L.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5253292, 525378, 525379, 525380, 526287, 526 75, C08F 2800

Patent

active

046984135

ABSTRACT:
An acrylic fiber useful in the preparation of precursor fibers for the preparation of carbon or graphite fibers contains 93.0-99.4 mol percent acrylonitrile, 0.6-4.0 mol percent of ammonium or amine having a pKb of 5 or less as neutralizing cations for sulfonic and sulfuric acid end groups derived from the initiator and activator and as neutralizing cations for sulfonic acid groups derived from one or more sulfonic acid containing comonomers and 0-3.0 mol percent of one or more comonomers selected from the group consisting of simple acrylate or methacrylate esters, simply vinyl esters, styrene, vinyl chloride and vinylidene chloride, the fiber containing no more than 0.3 mol percent of cations other than ammonium or amine.

REFERENCES:
patent: 2758003 (1956-08-01), Kleimer et al.
patent: 3260707 (1966-07-01), Caldwell et al.
patent: 3473881 (1969-10-01), Hallada
patent: 3810878 (1974-05-01), Sato et al.
patent: 3814577 (1974-06-01), Menikheim
patent: 4024227 (1977-05-01), Kishimoto et al.
patent: 4154807 (1979-05-01), Kishimoto et al.
Research Disclosure No. 15728 (May 1977), p. 15.

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