Title:
METHOD FOR PRODUCING POTASSIUM TANTALATE PARTICLES, METHOD FOR PRODUCING FILM, POTASSIUM TANTALATE PARTICLES, FILM, ANTIREFLECTIVE FILM, OPTICAL ELEMENT, AND OPTICAL APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/187412
Kind Code:
A1
Abstract:
Provided is a method for producing potassium tantalate particles, the method including a heating step for heating a mixture containing (A) an oxide including tantalum, (B) a potassium compound which is potassium hydroxide and/or potassium chloride, (C) at least one alcohol selected from the group consisting of ethylene glycol, methanol, ethanol, 1-propanol, and 2-propanol, and (D) water.
Inventors:
NISHI YASUTAKA (JP)
SUZUKI RYOKO (JP)
KANIE KIYOSHI (JP)
MURAMATSU ATSUSHI (JP)
SUZUKI RYOKO (JP)
KANIE KIYOSHI (JP)
MURAMATSU ATSUSHI (JP)
Application Number:
PCT/JP2021/010351
Publication Date:
September 23, 2021
Filing Date:
March 15, 2021
Export Citation:
Assignee:
NIKON CORP (JP)
UNIV TOHOKU (JP)
UNIV TOHOKU (JP)
International Classes:
C01G35/00; G02B1/00; G02B1/111
Foreign References:
| KR20010079013A | 2001-08-22 | |||
| JP2011247918A | 2011-12-08 | |||
| JP2015124159A | 2015-07-06 | |||
| JP2017178738A | 2017-10-05 | |||
| CN102854222A | 2013-01-02 | |||
| CN101602524A | 2009-12-16 |
Other References:
M. MAKAROVA; P. BYKOV; J. DRAHOKOUPIL; M. CERNANSKY; Z. DLABACEK; A. DEJNEKA; L. JASTRABIK; V. TREPAKOV;: "Solvothermal synthesis of nanocrystalline KTaO: Effect of solvent dielectric constant", MATERIALS RESEARCH BULLETIN, ELSEVIER, KIDLINGTON., GB, vol. 47, no. 7, 16 March 2012 (2012-03-16), GB , pages 1768 - 1773, XP028485131, ISSN: 0025-5408, DOI: 10.1016/j.materresbull.2012.03.028
WANG XIAOHUI; ZHENG SHILI; ZHANG YI: "A novel method to prepare ultrafine potassium tantalate powders", MATERIALS LETTERS, ELSEVIER, AMSTERDAM, NL, vol. 62, no. 8, 2008, AMSTERDAM, NL , pages 1212 - 1214, XP029141223, ISSN: 0167-577X, DOI: 10.1016/j.matlet.2007.08.014
WANG XIAOHUI; ZHENG SHILI; ZHANG YI: "A novel method to prepare ultrafine potassium tantalate powders", MATERIALS LETTERS, ELSEVIER, AMSTERDAM, NL, vol. 62, no. 8, 2008, AMSTERDAM, NL , pages 1212 - 1214, XP029141223, ISSN: 0167-577X, DOI: 10.1016/j.matlet.2007.08.014
Attorney, Agent or Firm:
SHOYO INTELLECTUAL PROPERTY FIRM (JP)
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