Distillation: processes – separatory – With disparate physical separation – Utilizing removing solid from liquid
Patent
1995-05-25
1996-04-23
Manoharan, Virginia
Distillation: processes, separatory
With disparate physical separation
Utilizing removing solid from liquid
203 63, 568438, B01D 336
Patent
active
055100066
ABSTRACT:
Vanillin is difficult to separate from second organic chemicals produced therewith such as parahydroxybenzaldehyde by conventional distillation or rectification because of the proximity of their boiling points. Vanillin can now be readily separated from such second organic chemicals by azeotropic distillation using as an effective azeotropic distillation agent, dibenzyl ether.
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Arnaud, et al., entitled "etude des gousses des vanille Madagascar/criteres analytiques de la recolte 1981", published by parfums, cosmetiques, aromes, No. 53, Oct.-Nov. 1983, pp. 99-101. Trnaslation into the English Language.
Derbesy, et al., entitled "contribution a letude des gousses de vanille/Criteres analytiques de differents lots de gousses Madagascar, Recolte 1980", published by parfums, cosmetiques, aromes, No. 43, Feb.-Mar. 1983, pp. 73-77. Translation into the English language.
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Horsley, et al, entitled "Azeotropic Data", No. six of the "Advances in Chemistry Series"/American Chemical Society, published Jun. 1952, front cover page, pp. 1, 2, 218, 219 and 249 of interest.
Arvizzigno Joseph
Finnan Jeffrey L.
Jones Thomas
International Flavors & Fragrances Inc.
Liberman Arthur L.
Manoharan Virginia
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