Process for isolating mesophase pitch

Details Process for isolating mesophase pitch Process for isolating mesophase pitch

C - Chemistry, Metallurgy

10

C

196/39

C10C 3/08 (2006.01)

Patent

CA 2026488

Isotropic pitch containing mesogens is combined with a solvent and subjected to dense phase or supercritical conditions and the mesogens ere phase separated. In one aspect the isotropic pitch containing mesogens is fluxed with a solvent to solubilize the mesogens, the flux mixture is filtered to remove nonsolubles and the mesogens are phase separated by use of the same solvent under dense phase or supercritical conditions of temperature and pressure. The phase separation conditions are such that the mesogens are recovered as mesophase.

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