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:	eng ; fre
Schlagworte:	CHEMISTRY HETEROCYCLIC COMPOUNDS IMPREGNATING OR COATING OF PAPER METALLURGY ORGANIC CHEMISTRY PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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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. L'invention concerne de nouveaux agents de blanchiment fluorescents, des compositions ou des mélanges de ceux-ci avec des agents de blanchiment fluorescents connus, leur préparation et leur utilisation. Les nouveaux agents de blanchiment fluorescents contiennent trois sous-unités structurelles dérivées de l'acide 4,4'-diamino-2,2'-stilbènedisulfonique. Les nouveaux composés et leurs mélanges avec des FWAs connus présentent une très bonne efficacité en tant qu'agents de blanchiment fluorescents pour des matériaux cellulosiques, en particulier pour le papier.