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COMPLEX OXIDE CERAMIC, METHOD FOR PRODUCING SAME, AND ARTICLE 新技術説明会

外国特許コード F190009923
整理番号 18T038
掲載日 2019年10月18日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2019JP027882
国際公開番号 WO 2020017493
国際出願日 令和元年7月16日(2019.7.16)
国際公開日 令和2年1月23日(2020.1.23)
優先権データ
  • 特願2018-134810 (2018.7.18) JP
発明の名称 (英語) COMPLEX OXIDE CERAMIC, METHOD FOR PRODUCING SAME, AND ARTICLE 新技術説明会
発明の概要(英語) A complex oxide ceramic according to one embodiment of the present invention contains a rare earth element and at least one element that is selected from among molybdenum, tungsten and vanadium. For example, the rare earth element is at least one element that is selected from among La, Ce and Gd.
従来技術、競合技術の概要(英語) BACKGROUND ART
Antimicrobial, anti-viral material, Ag (silver) or a metal such as cu (copper), titanium oxide, titanium apatite and so forth are known and such as a light, and many of the practical use. However the photocatalyst is irradiated with no light-microbial, anti-viral activity does not appear a problem. On the other hand, even in the dark and cu Ag or the activity, a shorter life, and cost was a problem.
In recent years, molybdenum oxide, in the dark the antimicrobial, anti-viral activity have been reported to express (for example, Non-Patent Document 1). The lanthanum oxide may also be antimicrobial activity have been reported (for example Non-Patent Document 2). However, detailed reports with respect to the composite oxide has not been performed. The antimicrobial and antiviral material, as a countermeasure against virus pandemic in the near future is an indispensable design task, has not been sufficiently examined yet the embodiment of the present invention.
In addition to this, the water repellency of a solid surface, thereby suppressing adhesion of water, microbial solid surface have been reported to improve the performance (for example, Non-Patent Document 3). Metal oxide such as titanium oxide is large, the percentage of the ionic bonds, its surface is typically, greater than the positive ions is covered with an oxygen atom. In the atmosphere of dissociated water molecules on the surface thereof the surface H+ combines with oxygen and form hydroxyl groups, dissociated OH - and is coordinated to the metal covered with a hydroxyl group, the number of molecules on the presence of physically adsorbed water or higher is generally hydrophilic. The metal oxide in order to provide water repellency, the water-repellent wax and generally use an organic material such as a silane surface treatment is used (for example, Non-Patent Document 4). However, the organic material surface-treated metal oxide is, the persistence (durability) of the water repellency is low and the problem that, a material having water repellency is excellent in durability is demanded.
The inventors of the present invention, in Patent Document 1, without using an organic material on the surface of the oxide ceramics impart water repellency to the disclosed technique. According to the Patent Document 1 a water repellent excellent in durability can be obtained an oxide ceramic.
However, the self-water repellency and anti-microbial, anti-virus performance having the oxide ceramic material is not obtained.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • TOKYO INSTITUTE OF TECHNOLOGY
  • KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGY
  • 発明者(英語)
  • NAKAJIMA AKIRA
  • MATSUMOTO TAKUMI
  • MATSUSHITA SACHIKO
  • ISOBE TOSHIHIRO
  • SUNADA KAYANO
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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