Title:
AQUEOUS CARBON NANOTUBE DISPERSION
Document Type and Number:
WIPO Patent Application WO/2023/032677
Kind Code:
A1
Abstract:
The present invention provides an aqueous carbon nanotube dispersion which exhibits excellent dispersibility of carbon nanotubes in water. The present invention provides an aqueous carbon nanotube dispersion which is obtained by dispersing carbon nanotubes in water, wherein: the carbon nanotubes have an average particle diameter (D50) of 1 µm or less; and if an aqueous dispersion of the carbon nanotubes having a concentration of 0.1% by mass is prepared, the spin-spin relaxation time (T22) of a second component is 1,000 msec or less as determined by the measurement method described below. [Spin-spin relaxation time (T22) of second component]
The spin-spin relaxation time (T22) of a second component is calculated by fitting a relaxation curve which is obtained by a measurement at 30°C by an H nuclear CPMG pulse sequence method to the curve expressed by formula (1). (1): y(t) = a01 × exp(-(t/T21)) + a02 × exp(-(t/T22)) + y0
t: capture time
y(t): signal intensity at capture time t
T21: spin-spin relaxation time of first component
T22: spin-spin relaxation time of second component
y0: signal intensity at capture time 0
Inventors:
KONDA YASUSHI (JP)
SUEOKA MEI (JP)
WATANABE HAYATO (JP)
SUEOKA MEI (JP)
WATANABE HAYATO (JP)
Application Number:
PCT/JP2022/031096
Publication Date:
March 09, 2023
Filing Date:
August 17, 2022
Export Citation:
Assignee:
OSAKA SODA CO LTD (JP)
International Classes:
C01B32/174
Domestic Patent References:
| WO2018168346A1 | 2018-09-20 | |||
| WO2007083681A1 | 2007-07-26 |
Foreign References:
| JP2014101249A | 2014-06-05 |
Attorney, Agent or Firm:
TANAKA, Junya et al. (JP)
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