Title:
PROCESS FOR PRODUCING CARBON-NANOTUBE-CONTAINING COMPOSITION, PROCESS FOR PRODUCING CARBON NANOTUBE DISPERSION, AND CARBON-NANOTUBE-CONTAINING COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2018/043487
Kind Code:
A1
Abstract:
A process for producing a carbon-nanotube-containing composition, the process including a liquid-phase oxidation step in which an unpurified carbon-nanotube-containing composition in which the intensity ratio between G-band and D-band (G/D ratio), as determined by Raman spectroscopy, is 50 or higher is heated together with nitric acid having a concentration of 1-50 wt%, with refluxing, to thereby conduct liquid-phase oxidation. A higher-quality carbon-nanotube-containing composition which contains no residual catalyst, has high heat resistance, and is reduced in by-product carbon content can be obtained in high yield.
Inventors:
HIRAI TAKAYOSHI (JP)
NISHINO HIDEKAZU (JP)
IMAZU NAOKI (JP)
NISHINO HIDEKAZU (JP)
IMAZU NAOKI (JP)
Application Number:
PCT/JP2017/030939
Publication Date:
March 08, 2018
Filing Date:
August 29, 2017
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C01B32/17; C01B32/174
Domestic Patent References:
| WO2013161317A1 | 2013-10-31 |
Foreign References:
| JP2009149503A | 2009-07-09 | |||
| JP2015048263A | 2015-03-16 | |||
| JP2007529640A | 2007-10-25 | |||
| JP2005007622A | 2005-01-13 | |||
| JP2012116667A | 2012-06-21 | |||
| CN104760946A | 2015-07-08 | |||
| US20160035499A1 | 2016-02-04 |
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