Document Type and Number:
Japanese Patent JPH0437873
Kind Code:
B2
Abstract:
A process for an efficient preparation of a mesophase pitch is disclosed. The process is suitable for the production of high performance carbon fibers, from a coal tar or a petroleum residual oil. More particularly, the present invention relates to a process for the preparation of a homogeneous mesophase pitch which comprises a continuous thermal treatment of a heavy oil or a pitch which does not contain quinoline insoluble fractions, in the presence or absence of an aromatic oil, subsequent distillation of the thermally treated product, recovery of a pitch with extremely low quinoline insoluble contents, hydrogenation of the pitch by continuous thermal treatment in the presence of a hydrogen-donating solvent, distillation and recovery of a hydrogenated pitch, and thermal treatment of the hydrogenated pitch. The mesophase pitch prepared by the process of the present invention is suitable for the production of high performance carbon fibers.
Inventors:
TSUCHITANI MASATOSHI
NAITO SAKAE
NAKAJIMA RYOICHI
NAITO SAKAE
NAKAJIMA RYOICHI
Application Number:
JP11929986A
Publication Date:
June 22, 1992
Filing Date:
May 26, 1986
Export Citation:
Assignee:
MARUZEN SEKYU KAGAKU KK
KOGYO GIJUTSU INCHO
KOGYO GIJUTSU INCHO
International Classes:
C10C3/02; C10C1/16; C10C3/00; C10C3/04; C10C3/06; C10C3/10; C10G67/02; C10G69/06; D01F9/145
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