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2 040 617

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C1

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IPC

(21) (22)

Application

93015139/12, 1993-03-19

(22)

Actual filing date

1993-03-19

(45)

Published

1995-07-25

(72)

Inventor

Zakazov A.N.Gogotov A.F.Sergeev A.D.Makovskaja T.I.Efremova G.G.Babkin V.A.

(73)

Holder

Irkutskij Institut Organicheskoj Khimii So Ran Khimii Drevesiny)

METHOD FOR BLEACHING OF CELLULOSE Russian patent published in 1995 - IPC

Abstract RU 2040617 C1

FIELD: bleaching of cellulose. SUBSTANCE: cellulose is bleached with hydrogen peroxide in alkali medium and organic additive is used in form of orthophenanthroline in the amount of 0.01-1.0% of mass of absolutely dry fibers. Then, cellulose is subjected to alkali treatment and acid treatment souring. EFFECT: higher efficiency. 1 tbl

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RU 2 040 617 C1

Authors

Zakazov A.N.

Gogotov A.F.

Sergeev A.D.

Makovskaja T.I.

Efremova G.G.

Babkin V.A.

Dates

1995-07-25—Published

1993-03-19—Filed

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