METHOD TO PRODUCE MODIFIED CELLULOSE FOR USE IN PRODUCTS FROM PAPER OR PAPER WEB, BLEACHED MODIFIED SULFATE CELLULOSE, PAPER OR CARDBOARD Russian patent published in 2012 - IPC D21C1/06 D21C3/02 D21C9/10

Abstract RU 2454494 C2

FIELD: textile, paper.

SUBSTANCE: method to produce modified cellulose for use in products from paper or paper web includes extraction of wood chips with a fluid containing water, at the temperature of 20° - 120°C from 5 minutes to 10 hours, to reduce content and remove hemicellulose to get processed wood chips. Then sulfate boiling is carried out, and the processed wood chips are bleached to produce a modified sulfate cellulose. Besides, the amount of hemicellulose contained in the modified bleached sulfate cellulose makes from 4% to 9% of the weight of the dry modified sulfate cellulose.

EFFECT: method improvement.

10 cl, 4 tbl, 4 ex, 2 dwg

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RU 2 454 494 C2

Authors

Tan Zheng

Gojal Goupehl

Koukoulas Aleksandr A.

Dates

2012-06-27—Published

2006-05-24—Filed