COMPOSITION AND METHOD OF BLEACHING PAPER Russian patent published in 2014 - IPC D21H21/30 C07D251/00 C09K11/06 

Abstract RU 2505636 C2

FIELD: textiles, paper.

SUBSTANCE: composition comprises at least one bis-triasinylaminostilbene compound containing alkylsulfoacid groups, as a fluorescent bleaching agent, a salt of a divalent cation, the carrier, and water. The invention also relates to a method of bleaching paper, which consists in the fact that the pulp sheet is contacted with the said composition, and to the paper obtained by this method.

EFFECT: method enables to obtain paper with improved whiteness, at that the obtained paper has improved printing performance.

25 cl, 3 dwg, 3 tbl, 3 ex

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RU 2 505 636 C2

Authors

Khunke Bernkhard

Kremer Mikhaehl'

Tauber Andrej

Klug Gjunter

Dates

2014-01-27Published

2009-06-10Filed