公开(公告)号：US10941100B2

公开(公告)日：2021-03-09

申请号：US16484020

申请日：2018-02-08

Applicant: RHODIA OPERATIONS

Inventor： Martine Vibert ,  Alain Etchebarne

IPC: C07C45/00 ,  A23L27/00 ,  C07C49/258 ,  A23L27/10 ,  B01D1/22 ,  B01D3/00 ,  B01D3/14 ,  B01D3/34 ,  B01D9/00 ,  A23L27/24

Abstract: The present invention relates to a method for the purification of natural vanillin, comprising a step involving the stripping of a liquid flow F2 containing natural vanillin. The invention also relates to the natural vanillin that can be obtained using the method of the invention, as well as a device for purifying natural vanillin.

公开(公告)号：US09126917B2

公开(公告)日：2015-09-08

申请号：US14364316

申请日：2012-12-13

Applicant: RHODIA OPERATIONS

Inventor： Martine Vibert ,  Corine Cochennec ,  Alain Etchebarne

IPC: C07C45/80

CPC classification number: C07C45/80 ,  C07C47/565 ,  C07C47/58

Abstract: A method is described for purifying vanillin, and derivatives thereof, from an initial solution of vanillin or of a vanillin derivative in a solvent S1 containing impurities, comprising the following steps: a) a step of evaporating the solvent S1 in the presence of water from such initial solution to obtain an aqueous solution of vanillin or of a vanillin derivative; b) a step of liquid/liquid extraction by bringing the aqueous solution obtained at the end of step a) into contact with a solvent S2, at a pH of greater than 8 and less than 10, to obtain an organic phase and an aqueous phase containing vanillin or a vanillin derivative and residual solvent S2; c) a step of precipitating, at a pH between 4 and 7.5, the vanillin contained in the aqueous phase obtained at the end of step b); and d) a step of isolating the vanillin or derivative thereof.

Abstract translation: 描述了从含有杂质的溶剂S1中的香草醛或香草醛衍生物的初始溶液中纯化香草醛及其衍生物的方法，包括以下步骤：a）在水存在下蒸发溶剂S1的步骤 获得香草醛或香草醛衍生物的水溶液的初始溶液; b）通过使步骤a）中得到的水溶液在大于8且小于10的pH下与溶剂S2接触来进行液/液萃取的步骤，得到有机相和水相 含有香草醛或香草醛衍生物和残留溶剂S2; c）在步骤b）结束时获得的水相中含有的香草醛在pH4至7.5之间沉淀的步骤; 和d）分离香草醛或其衍生物的步骤。

公开(公告)号：US20140316165A1

公开(公告)日：2014-10-23

申请号：US14364316

申请日：2012-12-13

Applicant: RHODIA OPERATIONS

Inventor： Martine Vibert ,  Corine Cochennec ,  Alain Etchebarne

IPC: C07C45/80

CPC classification number: C07C45/80 ,  C07C47/565 ,  C07C47/58

Abstract: A method is described for purifying vanillin, and derivatives thereof, from an initial solution of vanillin or of a vanillin derivative in a solvent S1 containing impurities, comprising the following steps: a) a step of evaporating the solvent S1 in the presence of water from such initial solution to obtain an aqueous solution of vanillin or of a vanillin derivative; b) a step of liquid/liquid extraction by bringing the aqueous solution obtained at the end of step a) into contact with a solvent S2, at a pH of greater than 8 and less than 10, to obtain an organic phase and an aqueous phase containing vanillin or a vanillin derivative and residual solvent S2; c) a step of precipitating, at a pH between 4 and 7.5, the vanillin contained in the aqueous phase obtained at the end of step b); and d) a step of isolating the vanillin or derivative thereof.

Abstract translation: 描述了从含有杂质的溶剂S1中的香草醛或香草醛衍生物的初始溶液中纯化香草醛及其衍生物的方法，包括以下步骤：a）在水存在下蒸发溶剂S1的步骤 获得香草醛或香草醛衍生物的水溶液的初始溶液; b）通过使步骤a）中得到的水溶液在大于8且小于10的pH下与溶剂S2接触来进行液/液萃取的步骤，得到有机相和水相 含有香草醛或香草醛衍生物和残留溶剂S2; c）在步骤b）结束时获得的水相中含有的香草醛在pH4至7.5之间沉淀的步骤; 和d）分离香草醛或其衍生物的步骤。