IMPROVED METHOD FOR PRODUCTION OF CELLULOSE, PAPER AND CARDBOARD Russian patent published in 2011 - IPC D21C9/10 D21B1/04

Abstract RU 2424388 C2

FIELD: textile, paper.

SUBSTANCE: method for production of bleached mechanical cellulose, including at least one stage of bleaching, which consists in cellulose treatment with at least one or several optical whiteners in presence of one or several active bleaches. At the same time active bleaches are selected from a group made of oxidising bleaches, which do not contain chlorine.

EFFECT: optimal bleaching.

16 cl, 3 tbl, 24 dwg

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RU 2 424 388 C2

Authors

Ngujan Khuan Truong

Dates

2011-07-20—Published

2007-06-04—Filed