Title:
ALUMINA PARTICLES AND RESIN COMPOSITION USING SAME
Document Type and Number:
WIPO Patent Application WO/2022/255226
Kind Code:
A1
Abstract:
Provided are alumina particles which are used as a filler for a resin composition and can improve the thermal conductivity of a resin composition further than before. In these alumina particles, the particle diameter D50 at cumulative 50% from the fine particle side of the cumulative particle size distribution is greater than 100 μm, the pregelatinization rate is at least 90%, and α-alumina is a single crystal. The alumina particles preferably have a Na content of at most 800 ppm. Moreover, the alumina particles preferably have a particle diameter D10 of 70-135 μm at cumulative 10% from the fine particle side of the cumulative particle size distribution.
Inventors:
NAKATA KUNIHIKO (JP)
ARISE ICHIRO (JP)
EGAWA TAKAMASA (JP)
SHIMAZAKI YASUHARU (JP)
DAIMON UEHARA MICHIRU (JP)
ARISE ICHIRO (JP)
EGAWA TAKAMASA (JP)
SHIMAZAKI YASUHARU (JP)
DAIMON UEHARA MICHIRU (JP)
Application Number:
PCT/JP2022/021614
Publication Date:
December 08, 2022
Filing Date:
May 26, 2022
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
C01F7/02; C01F7/022; C01F7/027; C08K3/22; C08L101/00
Domestic Patent References:
| WO2008053536A1 | 2008-05-08 | |||
| WO2020153505A1 | 2020-07-30 | |||
| WO2009017170A1 | 2009-02-05 | |||
| WO2020170307A1 | 2020-08-27 | |||
| WO2009133904A1 | 2009-11-05 | |||
| WO2008053536A1 | 2008-05-08 |
Foreign References:
| JP2012067205A | 2012-04-05 | |||
| JP2015078306A | 2015-04-23 | |||
| JP2015166294A | 2015-09-24 | |||
| JP2019167283A | 2019-10-03 | |||
| JP2006169090A | 2006-06-29 |
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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