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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。
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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.
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公开(公告)号：US09617198B2
公开(公告)日：2017-04-11
申请号：US14762384
申请日：2014-01-20
Applicant: RHODIA OPERATIONS
Inventor： Hubert Gayet , Denis Revelant , Martine Vibert
Abstract: The invention relates to a method for the purification of natural vanillin, comprising at least one step in which the natural vanillin is evaporated.
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Patent Agency Ranking
公开(公告)号：US20140323769A1
公开(公告)日：2014-10-30
申请号：US14349842
申请日：2012-10-05
Applicant: RHODIA OPERATIONS
Inventor： Laurent Garel , Martine Vibert , Corine Cochennec , François Metz
IPC: C07C45/64
CPC classification number: C07C45/64 , C07C47/575
Abstract: A method for preparing a compound of formula (I) which is a vanillin derivative, of dimer type, called 3-(4-hydroxy-3-methoxybenzyl)-4-hydroxy-5-methoxybenzaldehyde, such method comprising a reaction of vanillin and vanillyl alcohol in the presence of a base.
Abstract translation: 制备称为3-（4-羟基-3-甲氧基苄基）-4-羟基-5-甲氧基苯甲醛的二聚体型香草醛衍生物的式（I）化合物的方法，该方法包括香草醛和 香草醇在碱的存在下。
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公开(公告)号：US10017444B2
公开(公告)日：2018-07-10
申请号：US15480068
申请日：2017-04-05
Applicant: Rhodia Operations
Inventor： Hubert Gayet , Denis Revelant , Martine Vibert
Abstract: The invention relates to a natural vanillin, which is in the form of an amorphous solid of which the color, in ethanolic solution at 10% by weight, is less than or equal to 200 Hazen, preferably less than or equal to 100 Hazen.
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公开(公告)号：US20170204039A1
公开(公告)日：2017-07-20
申请号：US15480068
申请日：2017-04-05
Applicant: Rhodia Operations
Inventor： Hubert Gayet , Denis Revelant , Martine Vibert
IPC: C07C47/58
Abstract: The invention relates to a natural vanillin, which is in the form of an amorphous solid of which the color, in ethanolic solution at 10% by weight, is less than or equal to 200 Hazen, preferably less than or equal to 100 Hazen.
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公开(公告)号：US08933274B2
公开(公告)日：2015-01-13
申请号：US14349842
申请日：2012-10-05
Applicant: Rhodia Operations
Inventor： Laurent Garel , Martine Vibert , Corine Cochennec , François Metz
CPC classification number: C07C45/64 , C07C47/575
Abstract: A method for preparing a compound of formula (I) which is a vanillin derivative, of dimer type, called 3-(4-hydroxy-3-methoxybenzyl)-4-hydroxy-5-methoxybenzaldehyde, such method comprising a reaction of vanillin and vanillyl alcohol in the presence of a base.
Abstract translation: 制备称为3-（4-羟基-3-甲氧基苄基）-4-羟基-5-甲氧基苯甲醛的二聚体型香草醛衍生物的式（I）化合物的方法，该方法包括香草醛和 香草醇在碱的存在下。
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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。
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