Process for producing mesophase pitch

Details Process for producing mesophase pitch Process for producing mesophase pitch

C - Chemistry, Metallurgy

10

C

196/36

C10C 3/00 (2006.01)

Patent

CA 1040567

PROCESS FOR PRODUCING MESOPHASE PITCH ABSTRACT OF THE DISCLOSURE An improved process for producing pitch which is transformed, in part, to a liquid crystal or so-called "mesophase" state. According to the process, the meso- phase content of the pitch is formed while agitating the pitch so as to produce a homogeneous emulsion of the immiscible mesophase and non-mesophase portions of the pitch. Mesophase pitches prepared in this manner have been found to possess a lesser amount of high molecular weight molecules in the mesophase portion of the pitch and a lesser amount of low molecular weight molecules in the non-mesophase portion of the pitch, and thus a smaller differential between the average molecular weights of the mesophase and non-mesophase portions of the pitch, than mesophase pitches having the same meso- phase content which have been prepared in the absence of such agitation.

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