METHOD OF FLUORESCENT BLEACHING OF PAPER Russian patent published in 1999 - IPC

Abstract RU 2129180 C1

FIELD: pulp-and-paper industry. SUBSTANCE: surface of paper is brought into contact with pigmented coating composition containing fluorescent bleaching agent with general formula 1: (1) or surface of paper is brought into contact in gluing press with the same composition and supplementary agent: separation agent, dispersion agent, and/or emulsifier. EFFECT: increased degree of bleaching with very low concentration of bleaching agent. 34 cl, 4 tbl, 12 ex

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RU 2 129 180 C1

Authors

Peter Roringer

Tomas Ehlis

Jozef Zel'Ger

Dates

1999-04-20—Published

1994-04-28—Filed