Method of purifying the starting material for use in the...

Details Method of purifying the starting material for use in the... Method of purifying the starting material for use in the...

C - Chemistry, Metallurgy

10

C

196/39

C10C 1/16 (2006.01)

Patent

CA 1259576

METHOD OF PURIFYING THE STARTING MATERIAL FOR USE IN THE PRODUCTION OF CARBON PRODUCTS Abstract of the Disclosure: The unwanted components from coal tars should be removed at a certain stage of the process for producing homogeneous spinning pitches which are suitable for use in the production of high-performance carbon fibers from coal tars. The unwanted components can be eliminated from coal tars in a very efficient manner by the following procedures: subjecting the coal tars to distillation or flash distillation so as to separate a heavy component having a boiling point higher than a predetermined temperature, dissolving the heavy component in a monocyclic aromatic hydrocarbon solvent, and subjecting the solution to filtration or centrifugation.

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