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Title:
BISMUTH SULFIDE PARTICLES, METHOD FOR PRODUCING SAME, AND USE OF SAME
Document Type and Number:
WIPO Patent Application WO/2021/070700
Kind Code:
A1
Abstract:
Provided are bismuth sulfide particles having a high degree of blackness.　Bismuth sulfide particles having a high degree of blackness with an L* value of 22.0 or lower in the L*a*b* color system, and having a high infrared reflectance with a reflectance at a wavelength of 1200 nm of 30.0% or higher. The bismuth sulfide particles are produced by mixing a bismuth compound and a sulfur compound in an aqueous dispersion medium so that the ratio (S/Bi molar ratio) of the number of mol of sulfur atoms to the number of mol of bismuth atoms is 3.5-20 inclusive, and then heating. The heating temperature is preferably 30-145°C inclusive.

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Inventors:
SANEFUJI NORIHIKO (JP)
Application Number:
PCT/JP2020/037115
Publication Date:
April 15, 2021
Filing Date:
September 30, 2020
Export Citation:
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Assignee:
ISHIHARA SANGYO KAISHA (JP)
International Classes:
C01G29/00; C08K3/30; C08L101/00; C09D7/61; C09D201/00; C09K3/00
Foreign References:
CN107098387A2017-08-29
Other References:
MATERIALS LETTERS, vol. 63, 2009, pages 1496 - 1498
Attorney, Agent or Firm:
ASAMURA PATENT OFFICE, P.C. (JP)
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