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2 185 387

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Application

2000116314/04, 2000-06-20

(24)

Start date

2000-06-20

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Actual filing date

2000-06-20

(45)

Published

2002-07-20

(72)

Inventor

Ivanov A.V.Gartman O.R.Bazarnova N.G.Raevskikh V.M.

(73)

Holder

Altajskij Gosudarstvennyj Meditsinskij Universitet

CARBOXYMETHYLCHITOSAN PRODUCTION METHOD Russian patent published in 2002 - IPC

Abstract RU 2185387 C2

FIELD: production of chitosan and its derivatives. SUBSTANCE: dispersing of chitosan in organic solvent is followed by mercerization in alkaline medium, carboxymethylation of chitosan for 3-4 h at 60 C, ageing at 25 C for 12 to 20 h, and addition of ice acetic acid in water-free ethanol to neutralize product (pH 7). EFFECT: avoided heating and use of poisoning reagents. 2 ex

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RU 2 185 387 C2

Authors

Ivanov A.V.

Gartman O.R.

Bazarnova N.G.

Raevskikh V.M.

Dates

2002-07-20—Published

2000-06-20—Filed

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