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Method of concentrating fine particle dispersion and method of recovering fine particle

外国特許コード F110005179
整理番号 A121-50WO
掲載日 2011年8月25日
出願国 アメリカ合衆国
出願番号 54840703
公報番号 20060107793
公報番号 7732494
出願日 平成15年8月4日(2003.8.4)
公報発行日 平成18年5月25日(2006.5.25)
公報発行日 平成22年6月8日(2010.6.8)
国際出願番号 JP2003009875
国際公開番号 WO2004085030
国際出願日 平成15年8月4日(2003.8.4)
国際公開日 平成16年10月7日(2004.10.7)
優先権データ
  • 特願2003-086924 (2003.3.27) JP
  • 2003WO-JP09875 (2003.8.4) WO
発明の名称 (英語) Method of concentrating fine particle dispersion and method of recovering fine particle
発明の概要(英語) (US7732494)
A method for concentration of fine particles dispersed in a dispersion into an ionic liquid comprising, adding an ionic liquid, especially an organic ionic liquid at ordinary temperature, e.g., a salt of 1-butyl-3-methylimidazolium with PF6− to a dilute dispersion of fine particles so as to concentrate the fine particles into the ionic liquid.
特許請求の範囲(英語) [claim1]
1. A method for recovering fine particles dispersed in an aqueous medium comprising, adding an ionic liquid, which does not dissolve substantially a dispersing aqueous medium, to the aqueous medium containing fine particles and transferring said fine particles from said aqueous medium to the ionic liquid, wherein the amount of the ionic liquid b mL to be added to 10 mL of the aqueous medium containing said fine particles by a mM dispersing concentration is in the range so as the ratio a/b is 0.05 <= a/b<1.0,and wherein said ionic liquid is an organic ionic liquid selected from the group consisting of compounds represented by following formulae 1,

wherein, R3 and R4 are an alkyl group of carbon number 1-7, n is an interger of 1-3, R1 is an alkyl group which can possess a substitution group of carbon number 1-7, X- is selected from the group consisting of NO3-, (CF3SO3)2N-, TFSI-, Cl- and SO3H-.
[claim2]
2. The method for recovering fine particles dispersed in the aqueous medium of claim 1, wherein the ionic liquid is an ionic liquid which is liquid at room temperature.
  • 発明者/出願人(英語)
  • YOKOYAMA CHIAKI
  • KASAI HITOSHI
  • SARASHINA EIJI
  • INOMATA HIROSHI
  • NAKANISHI HACHIRO
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
国際特許分類(IPC)
米国特許分類/主・副
  • 516/31
  • 75/370
参考情報 (研究プロジェクト等) CREST Creation and Functions of New Molecules and Molecular Assemblies AREA
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