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2 074 920

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C1

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IPC

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Application

95111174/12, 1995-07-06

(22)

Actual filing date

1995-07-06

(45)

Published

1997-03-10

(72)

Inventor

Zujkov A.A.Osminin E.N.Goroshnikov V.V.Tol'Man G.Ju.Dedik Ju.P.Kol'Chugin M.V.

(73)

Holder

Kamskij Tselljulozno-Bumazhnyj Kombinat

METHOD OF WHITENING WOOD MASS Russian patent published in 1997 - IPC

Abstract RU 2074920 C1

FIELD: pulp-and-paper industry. SUBSTANCE: in order to produce higher-quality paper or cardboard, wood mass is treated with whitening solution containing hydrogen peroxide, sodium silicate, complexing agent, and sodium carbonate. The thus obtained mass is supplemented with aluminium sulfate solution and allowed to stand for 10-20 min. EFFECT: improved quality of product. 1 tbl

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RU 2 074 920 C1

Authors

Zujkov A.A.

Osminin E.N.

Goroshnikov V.V.

Tol'Man G.Ju.

Dedik Ju.P.

Kol'Chugin M.V.

Dates

1997-03-10—Published

1995-07-06—Filed

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