Title:
MANUFACTURING METHOD FOR STARTING MATERIAL FOR CERIUM-BASED ABRASIVE AGENT, AND MANUFACTURING METHOD FOR CERIUM-BASED ABRASIVE AGENT
Document Type and Number:
WIPO Patent Application WO/2019/049932
Kind Code:
A1
Abstract:
The present invention involves manufacturing a starting material for a cerium-based abrasive agent by means of a step for dry milling a mixed rare earth oxide having a rare earth element content of 80% by mass or more in terms of oxides, and a cerium content of 50% by mass or more in terms of oxides relative to the rare earth element content in terms of oxides, said cerium-based abrasive agent comprising milled product having an untamped density of more than 0.60 g/cm3 and at most 1.50 g/cm3, and a cumulative 50% particle size volume distribution of 2-20 μm. The present invention also involves manufacturing a cerium-based abrasive agent by means of a manufacturing method which includes a step for pulverizing the starting material for the cerium-based abrasive agent.
Inventors:
MASUDA TOMOYUKI (JP)
FUKAYAMA MASAKI (JP)
FUKAYAMA MASAKI (JP)
Application Number:
PCT/JP2018/033034
Publication Date:
March 14, 2019
Filing Date:
September 06, 2018
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
International Classes:
C09K3/14; B02C17/00; B24B37/00; C01F17/241; C01F17/265; C09G1/02
Domestic Patent References:
| WO2000073211A1 | 2000-12-07 |
Foreign References:
| JP2003082333A | 2003-03-19 | |||
| JP2009544559A | 2009-12-17 | |||
| JP2009501812A | 2009-01-22 |
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
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