Title:
METHOD FOR PRODUCING SEMICONDUCTOR-TYPE SINGLE-WALLED CARBON NANOTUBE DISPERSION
Document Type and Number:
WIPO Patent Application WO/2021/095864
Kind Code:
A1
Abstract:
In an aspect, provided is a method for producing a semiconductor-type single-walled carbon nanotube dispersion, wherein from a single-walled carbon nanotube mixture containing a semiconductor-type single-walled carbon nanotube and a metal-type single-walled carbon nanotube, the semiconductor-type single-walled carbon nanotube can be separated by using an easily available separating agent and a simple operation in an aqueous medium. An aspect of the present disclosure pertains to a method for producing a semiconductor-type single-walled carbon nanotube dispersion, the method comprising: step A for preparing a single-walled carbon nanotube dispersion to be separated, the single-walled carbon nanotube dispersion containing a single-walled carbon nanotube containing a semiconductor-type single-walled carbon nanotube and a metal-type single-walled carbon nanotube, an aqueous medium, and a nonionic polymer containing a structural unit A derived from a monomer represented by formula (1) below; and step B for centrifuging the single-walled carbon nanotube dispersion to be separated, and then collecting a supernatant containing the semiconductor-type single-walled carbon nanotube from the centrifugally separated single-walled carbon nanotube dispersion, wherein the content of the structural unit A in all the structural units of the polymer is 2 mol% or more, and the polymer is water-soluble. (1): CH2=CR1-COO-(EO)p(PO)q-R2
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| WO/2021/231365 | CARBON NANOSTRUCTURE COMPOSITIONS AND METHODS FOR PURIFICATION THEREOF |
Inventors:
ASAI MITSUO
HIRAISHI ATSUSHI
HIRAISHI ATSUSHI
Application Number:
PCT/JP2020/042479
Publication Date:
May 20, 2021
Filing Date:
November 13, 2020
Export Citation:
Assignee:
KAO CORP (JP)
International Classes:
C01B32/172; B82Y30/00; B82Y40/00; C01B32/159; C01B32/174; H01B1/24; H01B13/00
Domestic Patent References:
| WO2018159001A1 | 2018-09-07 | |||
| WO2019225651A1 | 2019-11-28 | |||
| WO2014136981A1 | 2014-09-12 |
Foreign References:
| JP2008055375A | 2008-03-13 | |||
| JP2010001162A | 2010-01-07 | |||
| JP2008055375A | 2008-03-13 | |||
| JP2007519594A | 2007-07-19 | |||
| JP2014503445A | 2014-02-13 | |||
| JP2012036041A | 2012-02-23 |
Other References:
See also references of EP 4059887A4
Attorney, Agent or Firm:
IKEUCHI & PARTNERS (JP)
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