Low melting mesophase pitches

Details Low melting mesophase pitches Low melting mesophase pitches

C - Chemistry, Metallurgy

10

C

6/158, 196/39, 1

C10C 3/08 (2006.01) C10C 1/00 (2006.01) C10C 3/00 (2006.01) D01F 9/145 (2006.01)

Patent

CA 1188647

ABSTRACT OF THE DISCLOSURE A low melting point, low molecular weight, heptane insoluble, 1,2,4-trichlorobenzene soluble mesophase pitch useful in carbon fiber spinning as such or as a plasticizer in a carbon fiber spinning composi- tion is obtained by heating chrysene, triphenylene or paraterphenyl as well as mixtures thereof and hydro- carbon fractions containing the same, dissolving the resulting heat treated material with 1,2,4-trich- lorobenzene, and separating the insolubles, and then contacting the 1,2,4-trichlorobenzene soluble fraction with a sufficient amount of heptane to precipitate the low melting point, low molecular weight mesophase pitch.

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