| (19) |
 |
|
(11) |
EP 0 244 227 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
16.12.1987 Bulletin 1987/51 |
| (43) |
Date of publication A2: |
|
04.11.1987 Bulletin 1987/45 |
| (22) |
Date of filing: 29.04.1987 |
|
|
| (84) |
Designated Contracting States: |
|
DE FR GB |
| (30) |
Priority: |
30.04.1986 JP 9787986
|
| (71) |
Applicant: NIPPON OIL CO. LTD. |
|
() |
|
| (72) |
Inventors: |
|
- Uemura, Seiichi
()
- Kato, Osamu
()
- Kobayashi, Takashi
()
- Inoue, Akira
()
- Ushio, Masaru
()
- Morita, Toru
()
|
|
| |
|
| (54) |
Process for producing pitch for the production of carbon fibers |
(57) A process for producing pitch for the production of carbon fibers, which process
comprises subjecting a heavy oil obtained in fluid catalytic cracking of petroleum
and having a boiling point not lower than 200°C, to the action of a high gradient
magnetic separatorto capture and remove fine particles contained in the heavy oil,
and then heat-treating the heavy oil at a temperature in the range of 380° to 480°C
and a pressure in the range of 2 to 50 kg/cm
2·G.