COMBINATION OF OPTICAL BLEACHING AGENTS Russian patent published in 2011 - IPC D21H21/30 D21H17/53 D21H17/37 

Abstract RU 2418904 C2

FIELD: chemistry.

SUBSTANCE: water-soluble composition contains a) at least one water-soluble optical bleaching agent, b) a polymer obtained from an ethylenically unsaturated monomer or a monomer mixture, characterised by that at least one monomer is an acrylamide and the water-soluble polymer has average (weight-average) molecular weight between 500 and 49000, optionally c) polyethylene glycol with weight-average molecular weight between 500 and 6000, and d) water. Said composition is used to optically bleach paper.

EFFECT: high degree of bleaching while preserving rheological properties.

7 cl, 7 tbl, 70 ex

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SU903432A1

RU 2 418 904 C2

Authors

Kokkroft Robert

Dizenrot Ted

Roringer Peter

Shteffen Vinfrid

Dates

2011-05-20Published

2005-10-17Filed