Composition for the fluorescent whitening of paper

Details Composition for the fluorescent whitening of paper Composition for the fluorescent whitening of paper

D - Textiles, Paper

21

H

D21H 21/30 (2006.01)

Patent

CA 2533364

Composition for the fluorescent whitening of paper, which comprises a) a fluorescent whitening agent (FWA) derived from 4,4'-bis[(1,3,5-triazin-2- yl)amino]stilbene-2,2'- disulphonic acid and characterized by one or both of the triazine rings carrying an -NH2 substituent; b) water and c) optionally, further auxiliaries, the use thereof in either the pulp mass, in coating or in the metering size-press or film press and to a process thereto.

L'invention concerne une composition pour le blanchiment fluorescent de papier, qui comprend : a) un agent de blanchiment fluorescent (FWA) dérivé de l'acide 4-4'-bis[(1,3,5-triazine-2-yl)amino]stilbène-2,2'-disulfonique, qui se caractérise en ce qu'il comprend un ou les deux composés cycliques triazine portant un substituant NH¿2 ?; b) de l'eau et c) éventuellement d'autres auxiliaires. L'invention concerne également l'utilisation de ladite composition, dans la masse de la pulpe, dans la composition de couchage, dans l'encolleuse ou dans l'encolleuse à rouleaux introduction, ainsi qu'un procédé correspondant.

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