Spinning pitch for carbon fibers and process for its production

Details Spinning pitch for carbon fibers and process for its production Spinning pitch for carbon fibers and process for its production

1991-10-22

1993-05-25

Morris, Theodore

Mineral oils: processes and products

Asphalts, tars, pitches and resins; making, treating and...

208 22, 208 44, 208 45, 4234474, C10C 300, C10C 308

Patent

active

052136779

ABSTRACT:
Spinning pitch for carbon fibers, which (1) has a glass transition temperature width of at most 60.degree. C. as measured by a differential scanning calorimeter, (2) contains at least 80% by volume an optically anisotropic phase, and (3) shows a shear viscosity of 200 poise at a temperature of from 270.degree. to 370.degree. C.

REFERENCES:
patent: 4277325 (1981-07-01), Greenwood
patent: 4502943 (1985-03-01), Dickakian
patent: 4518482 (1985-05-01), Dickakian
patent: 4548704 (1985-12-01), Dickakian
patent: 4620919 (1986-11-01), Uemura et al.
"CRC Handbook of Chemistry and Physics", Robert C. Weast, et al., editors, pp. C-680-683, C-726, 1990.

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