Title:
METHOD FOR MANUFACTURING CARBON FIBER
Document Type and Number:
WIPO Patent Application WO/2018/021386
Kind Code:
A1
Abstract:
The present invention is provided with a step for obtaining ashless coal by a solvent extraction process performed on coal, a step for heat-treating the ashless coal, and a step for melt-spinning the heat-treated ashless coal, the volatile portion of the coal being 30-53% by mass. As the molar ratio (O/C) of the oxygen content with respect to the carbon content of the coal, 0.07-0.23 is preferred. The solvent extraction process may be performed at 300-450°C. The heat treatment may be performed at 150-350°C.
Inventors:
HAMAGUCHI MAKI
WADA SHOHEI
INOUE TOSHINORI
YOON SEONG-HO
MIYAWAKI JIN
NAKABAYASHI KOJI
WADA SHOHEI
INOUE TOSHINORI
YOON SEONG-HO
MIYAWAKI JIN
NAKABAYASHI KOJI
Application Number:
PCT/JP2017/026987
Publication Date:
February 01, 2018
Filing Date:
July 26, 2017
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
UNIV KYUSHU NAT UNIV CORP (JP)
UNIV KYUSHU NAT UNIV CORP (JP)
International Classes:
D01F9/15
Domestic Patent References:
| WO2016031658A1 | 2016-03-03 | |||
| WO2015053332A1 | 2015-04-16 | |||
| WO2016181929A1 | 2016-11-17 | |||
| WO2016147743A1 | 2016-09-22 |
Other References:
YANG JIAN-XIAO ET AL.: "Development of the spinnable pitch and carbon fiber using the hyper coals from different rank coals", DAI 41 KAI ABSTRACTS OF ANNUAL MEETING OF THE CARBON SOCIETY OF JAPAN, 8 December 2014 (2014-12-08), pages 184
MAKI HAMAGUCHI ET AL.: "Manufacturing process and applications of the Hypercoal", TANSO, vol. 257, 2013, pages 149 - 156
MAKI HAMAGUCHI ET AL.: "Manufacturing process and applications of the Hypercoal", TANSO, vol. 257, 2013, pages 149 - 156
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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