(19)
(11)EP 0 251 301 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
23.08.1989 Bulletin 1989/34

(43)Date of publication A2:
07.01.1988 Bulletin 1988/01

(21)Application number: 87109421.5

(22)Date of filing:  30.06.1987
(51)International Patent Classification (IPC)4C04B 35/52
// C04B35/80
(84)Designated Contracting States:
DE FR GB

(30)Priority: 01.07.1986 JP 154587/86

(71)Applicant: MITSUBISHI KASEI CORPORATION
Tokyo 100 (JP)

(72)Inventors:
  • Okuyama, Kohei Mitsubishi Chemical
    Midori-ku Yokohama-shi Kanagawa-ken (JP)
  • Matsuura, Kazushi Mitsubishi Chemical
    Midori-ku Yokohama-shi Kanagawa-ken (JP)

(74)Representative: Wächtershäuser, Günter, Prof. Dr. 
Patentanwalt, Tal 29
80331 München
80331 München (DE)


(56)References cited: : 
  
      


    (54)Carbon fiber-reinforced carbon composite material


    (57) A carbon fiber-reinforced carbon composite material having a porosity of not higher than 20% is prepared by subjecting a carbon fiber-reinforced carbon composite material, having a porosity of from 25 to 95%, to a densification treatment, wherein the densification treatment is conducted with pyrolytic carbon, formed by the pyrolysis of a halogenated hydrocarbon-containing gas at a temperature of from 400 to 800°C.





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