Fluorescent whitening agents and mixtures thereof

The invention relates to novel fluorescent whitening agents, compositions or mixtures thereof with known fluorescent whitening agents, their preparation, and their use. The novel fluorescent whitening agents contain three structural subunits derived from 4,4"-diamino-2,2"-stilbenedisulfoni...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: PEEKHAUS, ROBERT, LANSING, THEO, KRAEMER, MICHAEL, HAUSCHEL, BERND, HAFERMANN, MARCO, HUNKE, BERNHARD
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention relates to novel fluorescent whitening agents, compositions or mixtures thereof with known fluorescent whitening agents, their preparation, and their use. The novel fluorescent whitening agents contain three structural subunits derived from 4,4"-diamino-2,2"-stilbenedisulfonic acid. The novel compounds and their mixtures with known FWAs show very good effectiveness as fluorescent whitening agents for cellulosic materials, in particular for paper.