METHOD AND SYSTEMS FOR BLEACHING OF LIGNOCELLULOSIC MASS AFTER COOKING WITH SODA AND ANTHRAQUINONE Russian patent published in 2013 - IPC D21C9/10 D21C3/26

Abstract RU 2479683 C2

FIELD: textiles, paper.

SUBSTANCE: method can provide whiteness corresponding to the standard in bleaching of sulphate pulp using a similar sequence of bleaching. In some cases, the bleaching sequences may be O-A-Do-Eop-D, O-A-ZDo-Eop-D, A-Do or A-ZDo.

EFFECT: conformance to standards of bleaching.

23 cl, 2 tbl, 1 dwg

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RU 2 479 683 C2

Authors

Shin Namkhi

Stromberg Bertil

O'Liri Pam

Dates

2013-04-20—Published

2008-06-17—Filed