TOP > 外国特許検索 > METHOD FOR PRODUCING NEGATIVE THERMAL EXPANSION MATERIAL, METHOD FOR PRODUCING REACTION PRECURSOR OF NEGATIVE THERMAL EXPANSION MATERIAL, REACTION PRECURSOR OF NEGATIVE THERMAL EXPANSION MATERIAL, AND NEGATIVE THERMAL EXPANSION MATERIAL

METHOD FOR PRODUCING NEGATIVE THERMAL EXPANSION MATERIAL, METHOD FOR PRODUCING REACTION PRECURSOR OF NEGATIVE THERMAL EXPANSION MATERIAL, REACTION PRECURSOR OF NEGATIVE THERMAL EXPANSION MATERIAL, AND NEGATIVE THERMAL EXPANSION MATERIAL NEW

外国特許コード F210010579
整理番号 (KP19-1089)
掲載日 2021年11月2日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2021JP007404
国際公開番号 WO 2021172525
国際出願日 令和3年2月26日(2021.2.26)
国際公開日 令和3年9月2日(2021.9.2)
優先権データ
  • 特願2020-032076 (2020.2.27) JP
発明の名称 (英語) METHOD FOR PRODUCING NEGATIVE THERMAL EXPANSION MATERIAL, METHOD FOR PRODUCING REACTION PRECURSOR OF NEGATIVE THERMAL EXPANSION MATERIAL, REACTION PRECURSOR OF NEGATIVE THERMAL EXPANSION MATERIAL, AND NEGATIVE THERMAL EXPANSION MATERIAL NEW
発明の概要(英語) This method for producing a negative thermal expansion material comprises: a step for dissolving, in a neutral or acidic solution, a bismuth salt, a nickel salt, a salt of a metal M capable of forming a trivalent ion, and optionally a rare-earth element salt or an antimony salt, to form a metal salt solution; a step for mixing the metal salt solution with a hypohalite salt and an alkaline compound and causing a metal salt to precipitate, to form a reaction precursor; and a step for pressurizing and heating the reaction precursor, to form a negative thermal expansion material containing a compound wherein, in BiNiO3, a portion of Bi is substituted by the rare-earth element or Sb and/or a portion of Ni is substituted by the metal capable of forming a trivalent ion.
従来技術、競合技術の概要(英語) BACKGROUND ART
In recent years, with advances in nanotechnology such as LSI manufacturing, misalignment in positioning due to thermal expansion of the member has become a problem. In order to address this problem, the development of zero-expansion materials in which a material having the property of contracting upon warming, i.e., negative thermal expansion, is dispersed in a resin has progressed.
Conventionally, as a material having negative thermal expansion properties, negative thermal expansion materials in which a part of Bi is substituted with a rare earth element or Sb, or a part of Ni is substituted with Al, Fe, or the like in BiNiO3 having a perovskite structure have been known (for example, see Patent Documents 1 and 2). This negative thermally expanding material exhibits a greater negative thermal expansion than existing materials, and has a negative thermal expansion coefficient that matches the thermal expansion coefficient of many resins (for example, several 10~ 100 ppm/°C).
  • 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)
  • AZUMA Masaki
  • NISHIKUBO Takumi
  • MATSUNO Kana
  • SAKAI Yuki
  • POEPPELMEIER Kenneth
  • PAULL Ryan J.
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 IT 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 ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN WS 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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