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Method for separation and collection of lignin derivative

外国特許コード F110003715
整理番号 B74-01WO
掲載日 2011年7月4日
出願国 欧州特許庁(EPO)
出願番号 06757003
公報番号 1900745
公報番号 1900745
出願日 平成18年6月6日(2006.6.6)
公報発行日 平成20年3月19日(2008.3.19)
公報発行日 平成28年7月27日(2016.7.27)
国際出願番号 JP2006311263
国際公開番号 WO2006132199
国際出願日 平成18年6月6日(2006.6.6)
国際公開日 平成18年12月14日(2006.12.14)
優先権データ
  • 2006JP311263 (2006.6.6) WO
  • 特願2005-167103 (2005.6.7) JP
発明の名称 (英語) Method for separation and collection of lignin derivative
発明の概要(英語) An object of the present invention is to provide a technique for separation/collection of a lignin derivative which is useful for the separation of a lignin derivative having a 1, 1-diphenylpropane unit and/or a unit derived from the 1, 1-diphenylpropane unit from a mixture system containing the lignin derivative.
In the Present invention, a lignin derivative having a 1, 1-diphenylpropane unit and/or a unit derived from the 1, 1-dipheylpropane unit is allowed to contact with a metal oxide in a liquid medium, thereby separating the lignin derivative in the form retained on the metal oxide.
特許請求の範囲(英語) [claim1]
1. A method for separating a lignin derivative comprising the step of; contacting the lignin derivative with a metal oxide in a liquid medium, separating the metal oxide carrying the lignin derivative from the liquid medium, and recovering the lignin derivative from the metal oxide under alkaline conditions at a temperature of not higher than 100 deg.C to prevent alkali degradation of the lignin derivative, wherein the lignin derivative has a 1,1-diphenylpropane unit and/or a unit derived from a 1,1-diphenylpropane unit.
[claim2]
2. A method according to claim 1, wherein the metal oxide is an oxide of one or more metals chosen from titanium, zinc, iron, cobalt, nickel, copper, tin, indium, lead, and niobium.
[claim3]
3. A method according to claim 2, wherein the metal oxide comprises a titanium oxide.
[claim4]
4. A method according to claim 1, wherein the metal oxide comprises a semiconductor material.
[claim5]
5. A method according to any of claims 1 to 4, wherein the metal oxide comprises a metal oxide particle having an average particle size of not greater than 300 nm.
[claim6]
6. A method according to any of claims 1 to 5, wherein the liquid medium is chosen from an aqueous medium, non- aqueous medium and mixture thereof.
[claim7]
7. A method according to any of claims 1 to 6, wherein the lignin derivative is dissolved or dispersed in the liquid medium.
[claim8]
8. A method according to any of claims 1 to 7, wherein the lignin derivative is one or more chosen from (a) a ligno-phenol derivative which is an phenol-derivative of lignin obtainable by solvating a lignin containing material with a phenol compound and then mixing the solvated lignin containing material with an acid; (b) a secondary derivative obtainable by introducing into the ligno-phenol derivative a group chosen from acyl group, carboxy group, amido group, and cross-linking group; (c) a secondary derivative obtainable by treating the ligno-phenol derivative with alkali; and (d) a higher order derivative obtainable by modifying the ligno-phenol derivative with at least two modifications chosen from introduction of acyl group, introduction of carboxy group, introduction of amido group, introduction of cross-linking group and alkali-treatment.
[claim9]
9. A method according to claim 8, wherein the lignin derivative comprises the lignin derivative (a).
[claim10]
10. A method according to claim 8, wherein the lignin derivative comprises the lignin derivative (b).
[claim11]
11. A method according to claim 8, wherein the lignin derivative comprises the lignin derivative (c).
[claim12]
12. A method for producing a lignin derivative comprising the step of; contacting the lignin derivative with a metal oxide in a liquid medium and thereby separating the metal oxide carrying the lignin derivative from the liquid medium, recovering the lignin derivative from the metal oxide under alkaline conditions at a temperature of not higher than 100 deg.C to prevent alkali degradation of the lignin derivative, wherein the lignin derivative has a 1,1-diphenylpropane unit and/or a unit derived from a 1,1-diphenylpropane unit.
[claim13]
13. A method according to claim 12, wherein the lignin derivative is a ligno-phenol derivative which is a phenol derivative of lignin in a reaction medium, obtainable by solvating a lignin containing material with a phenol compound and then mixing the solvated lignin containing material with an acid.
[claim14]
14. A method according to claim 12, wherein the lignin derivative is a ligno-phenol derivative of a lignin obtainable by solvating a lignin containing material with a phenol compound and then mixing the solvated lignin containing material with an acid; and the separation step comprises contacting the ligno-phenol derivative with the metal oxide added to the reaction medium of the ligno-phenol derivative after the formation of the ligno-phenol derivative.
[claim15]
15. A method of purifying a lignin derivative comprising the step of; contacting the lignin derivative with a metal oxide in a liquid medium and thereby separating the metal oxide carrying the lignin derivative from the liquid medium, recovering the lignin derivative from the metal oxide under alkaline conditions at a temperature of not higher than 100 deg.C to prevent alkali degradation of the lignin derivative, wherein the lignin derivative has a 1,1-diphenylpropane unit and/or a unit derived from a 1,1-diphenylpropane unit.
[claim16]
16. A method for recovering a lignin derivative from a composite material comprising it, comprising the step of;
contacting the lignin derivative with a metal oxide in a liquid medium and thereby
separating the metal oxide carrying the lignin derivative from the liquid medium, and
recovering the lignin derivative from the metal oxide under alkaline conditions at a temperature of not higher than 100 deg.C to prevent alkali degradation of the lignin derivative,
wherein the lignin derivative has a 1,1-diphenylpropane unit and/or a unit derived from a 1,1-diphenylpropane unit.
[claim17]
17. A method according to claim 16, wherein the composite material comprises a used product.
[claim18]
18. A method for producing a lignin derivative according to claim 12 which further comprises the step of;
performing one or more modifications to the lignin derivative carried on a metal oxide, the modifications are selected from the following modifications;
introduction of acyl group; introduction of carboxy group; introduction of amido group; introduction of cross-linking group; and alkali-treatment,
wherein the lignin derivative has a 1,1-diphenylpropane unit and/or a unit derived from a 1,1-diphenylpropane unit.
[claim19]
19. A method according to claim 18, wherein the modification steps involves retention of the modified lignin derivative.
  • 出願人(英語)
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
  • 発明者(英語)
  • FUNAOKA MASAMITSU
  • AOYAGI MITSURU
国際特許分類(IPC)
欧州特許分類/主・副
  • B01J020/02B4
  • B01J020/06
  • B01J020/28D24
  • B01J020/28D8
  • B01J020/32
  • B01J020/32B4
  • C07G001/00
  • C08H006/00
  • D21C011/00B
  • L01J220/58
指定国 Contracting States: DE FI FR GB NL SE
参考情報 (研究プロジェクト等) SORST Selected in Fiscal 2004
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