Optically anisotropic carbonaceous pitch and process for produci

Details Optically anisotropic carbonaceous pitch and process for produci Optically anisotropic carbonaceous pitch and process for produci

1982-09-07

1986-05-20

Doll, John

Mineral oils: processes and products

Products and compositions

Asphalts, tars, pitches and resins

208 39, 208 40, 4234472, 4234474, 4234476, C10C 300, D01F 912, D01F 920

Patent

active

045899746

ABSTRACT:
This invention describes a substantially homogeneous, optically anisotropic carbonaceous pitch characterized in that the major portion of said pitch consists of a continuous, optically anisotropic phase, said optically anisotropic phase contains spherules of an optically isotropic phase having diameters of not more than about 100 .mu.m and dispersed in said optically anisotropic phase, the content of said optically isotropic spherules is up to about 20% on the basis of said pitch as a whole, said pitch contains at least about 30 wt % (based on said pitch) of a quinoline-soluble component, and said pitch has a lower softening point.

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Chwastiak, S., et al, Quantitative Determination of Mesophase Content in Pitch, Carbon, vol. 19, No. 5, pp. 357-363.

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