(19)
(11) EP 0 117 099 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
17.04.1985 Bulletin 1985/16

(43) Date of publication A2:
29.08.1984 Bulletin 1984/35

(21) Application number: 84300780

(22) Date of filing: 07.02.1984
(84) Designated Contracting States:
DE FR GB

(30) Priority: 08.02.1983 JP 1916883
08.02.1983 JP 1916983

(71) Applicant: FUJI STANDARD RESEARCH INC.
 ()

(72) Inventors:
  • Otani, Sugio
     ()
  • Arai, Tomio
     ()
  • Gomi, Shimpei
     ()
  • Mogi, Fumio
     ()

   


(54) Novel carbonaceous pitch, process for the preparation thereof and use thereof to make carbon fibers


(57) A novel reformed mesophase pitch is provided which has a mesophase content MC of between 40 and 100 %, a quinoline-insoluble content QI of between 5 and 70 weight % and anisotropic domains forming a substantially continuous phase and which is obtained by heat-treating a hydrogenated isotropic pitch. The reformed mesophase pitch preferably has a softening point SP in °C satisfying the following conditions: when



and

and when



and


The reformed mesophase pitch is useful as precursor materials for carbon fibers.





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