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2 463 353

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IPC

C12P19/04(2006-01-01)

C12P19/06(2006-01-01)

C08B37/00(2006-01-01)

(21) (22)

Application

2010138982/10, 2010-09-22

(24)

Start date

2010-09-22

(22)

Actual filing date

2010-09-22

(45)

Published

2012-10-10

(72)

Inventor

Vinokurov Vladimir Arnol'DovichFilippova Ol'Ga Evgen'EvnaMitjuk Dmitrij Jur'EvichBarabanova Anna IvanovnaFilenko Denis Gennad'EvichPletneva Vera Anatol'EvnaGushchina Julija Fedorovna

(73)

Holder

Gosudarstvennoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Rossijskij Gosudarstvennyj Universitet Nefti I Gaza Imeni I.M. Gubkina

METHOD FOR HYDROPHOBIC MODIFICATION OF EXOPOLYSACCHARIDES Russian patent published in 2012 - IPC C12P19/04 C12P19/06 C08B37/00

Abstract RU 2463353 C2

FIELD: chemistry.

SUBSTANCE: disclosed is a method for hydrophobic modification of exopolysaccharides selected from xanthan and ritizan. The H⁺ form of exopolysaccharide is obtained. The obtained H⁺ form of exopolysaccharide then reacts with a primary alkyl amine in an aprotic solvent in the presence of dicyclohexyl carbodiimide. The aprotic solvent used is 1-methyl-2-pyrrolidone, dimethyl formamide and dimethylsulphoxide. The modified exopolysaccharide is separated by multiple precipitation.

EFFECT: method enables to obtain modified xanthan and ritizan with high output.

2 cl, 6 ex

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RU 2 463 353 C2

Authors

Vinokurov Vladimir Arnol'Dovich

Filippova Ol'Ga Evgen'Evna

Mitjuk Dmitrij Jur'Evich

Barabanova Anna Ivanovna

Filenko Denis Gennad'Evich

Pletneva Vera Anatol'Evna

Gushchina Julija Fedorovna

Dates

2012-10-10—Published

2010-09-22—Filed