Title:
ALUMINA POWDER AND ALUMINA SLURRY INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2023/095871
Kind Code:
A1
Abstract:
An alumina powder satisfying the following relationship (1). Relationship (1): Rsp/(total surface area of alumina powder)≤12.0 Rsp and the total surface area of alumina powder in relationship (1) are obtained respectively using the following equations (2) and (3). Equation (2): Rsp=(Rav-Rb)/Rb Rav is the inverse of a transverse relaxation time measured by examining, by pulse NMR spectroscopy, a volume X (ml) of an alumina slurry obtained by dispersing the alumina powder in a dispersion medium, and Rb is the inverse of a transverse relaxation time measured by examining, by pulse NMR spectroscopy, a volume X (ml) of the dispersion medium. Equation (3): Total surface area (m2) of alumina powder = (mass (g) of alumina powder in the volume X (ml))×(BET specific surface area (m2/g) of alumina)
Inventors:
KAJINO TEPPEI (JP)
KISHIDA HIROSHI (JP)
KISHIDA HIROSHI (JP)
Application Number:
PCT/JP2022/043523
Publication Date:
June 01, 2023
Filing Date:
November 25, 2022
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
C01F7/30; B24B37/00; C09G1/02; C09K3/14
Domestic Patent References:
| WO2014017662A1 | 2014-01-30 |
Foreign References:
| JP2010001198A | 2010-01-07 | |||
| JPH0789717A | 1995-04-04 | |||
| JPH0812325A | 1996-01-16 | |||
| JP2005001984A | 2005-01-06 | |||
| JPH1059713A | 1998-03-03 | |||
| JP2010254553A | 2010-11-11 |
Other References:
TAKEDA, SHINICHI: "Ceramic powder considerations - surface properties and wetting", NEW CERAMICS LETTER, no. 47, 30 November 2012 (2012-11-30), pages 3 - 6, XP009546652, ISSN: 2436-7303
Attorney, Agent or Firm:
YAMAO, Norihito (JP)
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