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US 2006/0185805 A1Published application
Composition for the fluorescent whitening of paper
OwnerPeter Rohringer, Robert Hochberg +3inventors
InventorsPeter Rohringer, Robert Hochberg, Oliver Becherer, Hans Kramer, Goetz Scheffler
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Abstract
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.
Claims11
A composition for the fluorescent whitening of paper or paperboard comprising
- 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.
Dependencies are inferred from the claim text.