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2 318 796

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(51)

IPC

C07C51/42(2006-01-01)

C07C53/16(2006-01-01)

(21) (22)

Application

2006136634/04, 2006-10-18

(24)

Start date

2006-10-18

(22)

Actual filing date

2006-10-18

(45)

Published

2008-03-10

(72)

Inventor

Zanaveskin Leonid NikolaevichZanaveskin Konstantin LeonidovichBulanov Vjacheslav NikolaevichRzaev Konstantin VladimirovichKozyrev Nikolaj AleksandrovichKozlov Sergej Aleksandrovich

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennost'Ju

METHOD FOR PURIFICATION OF MONOCHLOROACETIC ACID Russian patent published in 2008 - IPC C07C51/42 C07C53/16

Abstract RU 2318796 C1

FIELD: organic chemistry.

SUBSTANCE: invention relates to method for purification of monochloroacetic acid from dichloroacetic acid impurities. Claimed method includes hydrogenolysis in presence of hydrogen in film regime at 135-145°C in cascade of sequentially bonded reactors with fixed bed of heterogeneous catalyst namely palladium on activated carbon. Preferably reactor cascade with intermediate cooling with cold flow of monochloroacetic acid as cooling agent is used.

EFFECT: simplified process; product of improved quality.

3 cl, 7 ex, 3 dwg

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RU 2 318 796 C1

Authors

Zanaveskin Leonid Nikolaevich

Zanaveskin Konstantin Leonidovich

Bulanov Vjacheslav Nikolaevich

Rzaev Konstantin Vladimirovich

Kozyrev Nikolaj Aleksandrovich

Kozlov Sergej Aleksandrovich

Dates

2008-03-10—Published

2006-10-18—Filed