TOP > 外国特許検索 > METHOD FOR PRODUCING LIGNIN FROM BIOMASS USING LIGNIN-DISSOLVING IONIC LIQUID, AND METHOD FOR PRODUCING LIGNIN, HEMICELLULOSE AND CELLULOSE

METHOD FOR PRODUCING LIGNIN FROM BIOMASS USING LIGNIN-DISSOLVING IONIC LIQUID, AND METHOD FOR PRODUCING LIGNIN, HEMICELLULOSE AND CELLULOSE コモンズ

外国特許コード F140007823
整理番号 S2012-0757-N0
掲載日 2014年1月23日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2013JP064885
国際公開番号 WO 2014002674
国際出願日 平成25年5月29日(2013.5.29)
国際公開日 平成26年1月3日(2014.1.3)
優先権データ
  • 特願2012-143093 (2012.6.26) JP
発明の名称 (英語) METHOD FOR PRODUCING LIGNIN FROM BIOMASS USING LIGNIN-DISSOLVING IONIC LIQUID, AND METHOD FOR PRODUCING LIGNIN, HEMICELLULOSE AND CELLULOSE コモンズ
発明の概要(英語) An ionic liquid capable of dissolving lignin at a high level is developed, and a method for producing lignin from a biomass at low cost and safely using a simple apparatus is provided. The present invention provides a method for producing lignin, which comprises the steps of: (1) mixing a lignin-dissolving ionic liquid represented by chemical formula (1) (wherein R1 and R3 may be the same as or different from each other and independently represent an alkyl group having 1 to 6 carbon atoms or an alkenyl group having 2 to 6 carbon atoms, R2 may be mono- or poly-substituted and represents a hydrogen atom, an amino group, a hydroxy group, a phenyl group, an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms or an alkoxy group, Y represents CH2, O or S, n corresponds to the number of ring-constituting elements and is 1 or 2, and X represents an anion derived from an amino acid, wherein each of the alkyl group, the alkenyl group and the alkoxy group may have one or more atoms or groups independently selected from a halogen atom, an amino group, a phenyl group, a cycloalkyl group, an alkoxy group and a hydroxy group as a substituent or substituents) with a biomass at 20 to 80˚C to produce a mixed solution; (2) separating the mixed solution produced in the above-mentioned step (1) into an ionic liquid phase and a residue; and (3) adding a solvent to the ionic liquid phase produced in the above-mentioned step (2) to allow lignin to precipitate, and then separating and collecting lignin.
  • 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
  • TOTTORI UNIVERSITY
  • 発明者(英語)
  • ITOH TOSHIYUKI
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 DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IS JP KE KG KN KP KR KZ LA LC LK LR LS LT 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 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 TD TG
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