Process for the preparation of an intermediate pitch for...

Details Process for the preparation of an intermediate pitch for... Process for the preparation of an intermediate pitch for...

C - Chemistry, Metallurgy

10

C

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C10C 3/06 (2006.01) C10C 1/08 (2006.01) C10C 1/16 (2006.01) C10C 1/19 (2006.01) C10C 3/00 (2006.01) D01F 9/145 (2006.01)

Patent

CA 1259575

Abstract of the Disclosure Until now, it has not yet been succeeded to prepare high performance carbon fibers having satisfactory strength from heavy oils of coal or petroleum origin. We now succeeded to prepare an excellent intermediate pitch which allows the preparation of high performance carbon fibers having tensile strength of higher than 300 Kg/mm2 and Young's modulus of 50 ton/mm2. The intermediate pitch can be obtained by heating a heavy oil of coal or petroleum origin in a tubular heater under a specific conditions, and then flash distilling the heater effluent in a flash distillation column under a specific condition so as to remove lighter fractions and recovering heavy fraction from the column bottom as the intermediate pitch. The process for the preparation of the intermediate pitch is simple and economical and allows continuous production without fluctuation of quality of the intermediate pitch. The intermediate pitch is also suitable for the production of higher density carbon products.

506480

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