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2 119 987

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C1

(51)

IPC

(21) (22)

Application

98102909/12, 1998-02-25

(22)

Actual filing date

1998-02-25

(45)

Published

1998-10-10

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Inventor

Mutovina M.G.Bondareva T.A.Samsonov N.E.Fadeev B.A.Kirsanov V.A.Orekhov B.V.Ovchinnikov B.A.Beznosov Ju.N.Fetisova L.E.Razuvaeva T.M.Sharova S.G.Kosolapov S.M.Tol'Man G.Ju.Timoshevskij A.N.Dedik Ju.P.Efimova V.N.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Nauchno-Issledovatel'Skij Institut Bumagi"Sovmestnoe Predprijatie Aktsionernoe ObshchestvoKamskij Tselljulozno-Bumazhnyj Kombinat

CELLULOSE PRODUCTION METHOD Russian patent published in 1998 - IPC

Abstract RU 2119987 C1

FIELD: pulp-and-paper industry. SUBSTANCE: method concerns cellulose on mixed basis from foliage wood and is intended for printing, writing, and sanitary-hygienic paper and for chemical processing. Method consists in digestion of foliage wood chips in cooking liquor based on magnesium and sodium where ratio of magnesium oxide to sodium oxide ranges from 19:1 to 1:19 at pH 1.8-2.2 and temperature 145-148 C with total sulfur dioxide content 4.5-5.0%. EFFECT: reduced rigidity of product. 1 tbl

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RU 2 119 987 C1

Authors

Mutovina M.G.

Bondareva T.A.

Samsonov N.E.

Fadeev B.A.

Kirsanov V.A.

Orekhov B.V.

Ovchinnikov B.A.

Beznosov Ju.N.

Fetisova L.E.

Razuvaeva T.M.

Sharova S.G.

Kosolapov S.M.

Tol'Man G.Ju.

Timoshevskij A.N.

Dedik Ju.P.

Efimova V.N.

Dates

1998-10-10—Published

1998-02-25—Filed

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