(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 |
(22) | Date of filing: 30.06.1987 |
| (51) | International Patent Classification (IPC)4: C04B 35/52 // C04B35/80 |
|
(84) | Designated Contracting States: | | DE FR GB |
(30) | Priority: | 01.07.1986 JP 154587/86
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(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) |
|
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(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.