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2 348 606

(13)

(51)

IPC

C07C47/58(2006-01-01)

C07C47/575(2006-01-01)

C07C45/80(2006-01-01)

(21) (22)

Application

2007143228/04, 2007-11-21

(24)

Start date

2007-11-21

(22)

Actual filing date

2007-11-21

(45)

Published

2009-03-10

(72)

Inventor

Taraban'Ko Valerij Evgen'EvichChelbina Julija VjacheslavovnaKajgorodov Konstantin LeonidovichKoropachinskaja Natal'Ja Valer'Evna

(73)

Holder

Institut Khimii I Khimicheskoj Tekhnologii So Ran

METHOD OF VANILLIN AND LILAC ALDEHYDE EXTRACTION Russian patent published in 2009 - IPC C07C47/58 C07C47/575 C07C45/80

Abstract RU 2348606 C1

FIELD: chemistry.

SUBSTANCE: vanillin is applied in confectionery, pharmaceutics and manufacturing of perfume and cosmetics, and lilac aldehyde is applied in manufacturing of trimetoprim, biseptol and other pharmaceutical drugs. Method involves extraction by oxygen-containing extraction agents at pH 6.0-8.0 and re-extraction by water alkaline solution at pH 10-14. Extraction stage involves use of tributhylphosphate, or kerosene solutions of tributylphosphate with 40-99 wt % of tributylphosphate, as extraction agents.

EFFECT: reduced volume of extraction agent required at extraction stage in comparison to existing technique.

7 ex

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RU 2 348 606 C1

Authors

Taraban'Ko Valerij Evgen'Evich

Chelbina Julija Vjacheslavovna

Kajgorodov Konstantin Leonidovich

Koropachinskaja Natal'Ja Valer'Evna

Dates

2009-03-10—Published

2007-11-21—Filed