METHOD OF CARBOXYMETHYLATION OF LIGNOCARBOHYDRATE MATERIALS Russian patent published in 1999 - IPC

Abstract RU 2130947 C1

FIELD: pulp-and-paper industry. SUBSTANCE: starting material is treated with solution of sodium hydroxide in isopropyl alcohol for 0.5 to 6.0 hr at 20 to 150 C and then with monochloroacetic acid for 0.5 to 4.0 hr at 20 to 60 C. Starting materials are lignocarbohydrate materials containing 35-60% cellulose, 20-40% lignin, and 13-35% hemicelluloses. EFFECT: increased resource of raw materials. 5 tbl, 4 ex

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RU 2 130 947 C1

Authors

Galochkin A.I.

Markin V.I.

Bazarnova N.G.

Zastavenko N.V.

Krest'Jannikova N.S.

Dates

1999-05-27—Published

1996-07-31—Filed