Title:
HEXAGONAL BORON NITRIDE POWDER
Document Type and Number:
WIPO Patent Application WO/2022/153964
Kind Code:
A1
Abstract:
[Problem] To provide: a boron nitride powder which has a relatively small particle size, which has a significantly reduced amount of metal impurities existing on the surface thereof, and in which high purification is achieved at a high level; and a method for producing said boron nitride powder. [Solution] This hexagonal boron nitride powder has an average particle diameter (D50) of 2.0-6.0 μm and has a specific surface area of 4-12 m2/g as measured by a BET method. On the surfaces of hexagonal boron nitride particles forming the powder, the concentration of calcium elements is 1 ppm or less, the concentration of silicon elements is 5 ppm or less, the concentration of sodium elements is 5 ppm or less, and the concentration of iron elements is 1 ppm or less. The average aspect ratio (major axis/thickness) of the powder is preferably 1-7. The hexagonal boron nitride powder is useful as a filler for resins.
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Inventors:
IKEDA YUUICHI (JP)
DAIKI SHOTA (JP)
DAIKI SHOTA (JP)
Application Number:
PCT/JP2022/000491
Publication Date:
July 21, 2022
Filing Date:
January 11, 2022
Export Citation:
Assignee:
TOKUYAMA CORP (JP)
International Classes:
C01B21/064; C08K3/38; C08L101/00
Foreign References:
| JP2010076956A | 2010-04-08 | |||
| JP2019182737A | 2019-10-24 |
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
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