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2 128 188

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C1

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IPC

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Application

97102203/04, 1997-02-11

(22)

Actual filing date

1997-02-11

(45)

Published

1999-03-27

(72)

Inventor

Kharitonov S.V.Ponomarev B.A.Kunichan V.A.Kharitonov V.A.

(73)

Holder

Bijskij Tekhnologicheskij Institut Altajskogo Gosudarstvennogo Tekhnicheskogo Universiteta Im.I.I.Polzunova

CARBOXYMETHYLCELLULOSE PRODUCTION PROCESS Russian patent published in 1999 - IPC

Abstract RU 2128188 C1

FIELD: pulp-and-paper industry. SUBSTANCE: invention aims at producing carboxymethylcellulose for application as drilling mud stabilizer, as antiresorbent included in synthetic detergents, as depressor in flotation enrichment of copper-nickel and sylvinite ores, as dextrin glue, etc. Special-type paper waste originated from destruction of bank notes is mercerized with sodium hydroxide aqueous solution, treated with sodium monochloroacetate, ripened on standing, and dried. EFFECT: reduced (by 25-30%) cost. 1 tbl

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RU 2 128 188 C1

Authors

Kharitonov S.V.

Ponomarev B.A.

Kunichan V.A.

Kharitonov V.A.

Dates

1999-03-27—Published

1997-02-11—Filed

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