Title:
SPHERICAL ALUMINA POWDER, RESIN COMPOSITION AND HEAT DISSIPARION MATERIAL
Document Type and Number:
WIPO Patent Application WO/2022/071137
Kind Code:
A1
Abstract:
The present invention provides a spherical alumina powder which is configured such that: in the particle size distribution thereof as measured by a laser diffraction/scattering particle size distribution measuring device, the maximum particle diameter indicating the maximum peak is within the range of from 35 μm to 70 μm; the frequency of the maximum particle diameter is from 5% to 15%; and among the respective frequencies of 20 particle diameters obtained by dividing the particle diameter range of from 1 μm to 20 μm into 19 equal parts, the frequencies of at least 6 particle diameters are 0.1% or more, and the cumulative frequency of the particle diameter range of from 1 μm to 20 μm is from 3% by volume to 17% by volume.
Inventors:
AIKYO TERUHIRO (JP)
KAWABATA TOMOHIRO (JP)
YAMAGUCHI JUN (JP)
YAMASHITA ATSUSHI (JP)
KAWABATA TOMOHIRO (JP)
YAMAGUCHI JUN (JP)
YAMASHITA ATSUSHI (JP)
Application Number:
PCT/JP2021/035142
Publication Date:
April 07, 2022
Filing Date:
September 24, 2021
Export Citation:
Assignee:
DENKA COMPANY LTD (JP)
International Classes:
C01F7/027; C08K3/22; C08K7/16; C08L101/00
Foreign References:
| JP2004244491A | 2004-09-02 | |||
| JP2020037502A | 2020-03-12 | |||
| JP2010126385A | 2010-06-10 | |||
| JP2004262674A | 2004-09-24 |
Attorney, Agent or Firm:
TAGUCHI, Masahiro et al. (JP)
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