Title:
POLISHING AGENT COMPOSITION FOR FLUOROPHOSPHATE GLASSES, AND POLISHING METHOD USING POLISHING AGENT COMPOSITION FOR FLUOROPHOSPHATE GLASSES
Document Type and Number:
WIPO Patent Application WO/2022/130813
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a polishing agent composition for fluorophosphate glasses, which has a high polishing speed and can polish a fluorophosphate glass as an alternative for a cerium oxide-based polishing agent. The polishing agent composition for fluorophosphate glasses comprises silica, a water-soluble polymeric compound, an acid and/or a salt thereof, and water, and has a pH value (at 25°C) ranging from 1.0 to 9.0. The silica is colloidal silica and has an average particle diameter (D50) ranging from 10 nm to 200 nm, and a polymer having a constituent unit derived from a polysaccharide and/or an unsaturated amide can be used as the water-soluble polymeric compound.
Inventors:
SOBUE TOMOYUKI (JP)
Application Number:
PCT/JP2021/040427
Publication Date:
June 23, 2022
Filing Date:
November 02, 2021
Export Citation:
Assignee:
YAMAGUCHI SEIKEN KOGYO CO LTD (JP)
International Classes:
C09K3/14; B24B37/00; C03C19/00
Domestic Patent References:
| WO2017102826A1 | 2017-06-22 |
Foreign References:
| JP2005213091A | 2005-08-11 | |||
| JPH10330132A | 1998-12-15 |
Attorney, Agent or Firm:
WATANABE Kazuhira (JP)
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