Chemistry of inorganic compounds – Carbon or compound thereof – Elemental carbon
Patent
1994-09-30
1997-02-11
Lewis, Michael
Chemistry of inorganic compounds
Carbon or compound thereof
Elemental carbon
4234471, D01F 912
Patent
active
056017944
ABSTRACT:
A pitch-type carbon fiber made from a pitch having 1 a glass transition temperature width of at most 40.degree.C. as measured by a differential scanning calorimeter, 2 a proportion of the optically anisotropic phase of at least 10% by volume, and 3 a quinoline-insoluble content of at most 5% by weight, as a spinning raw material pitch.
REFERENCES:
patent: 4017327 (1977-04-01), Lewis et al.
patent: 4775589 (1988-10-01), Hamada et al.
patent: 5120424 (1992-06-01), Cottinet et al.
patent: 5213677 (1993-05-01), Yamamoto et al.
Aikyo Hiroyuki
Shirosaki Kazuo
Yamamoto Iwao
Yoshiya Akihiko
Hendrickson Stuart L.
Lewis Michael
Mitsubishi Chemical Corporation
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