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US 2008/0307585 A1Published application
Triazinylaminostilbene Disulphonic Acid Mixtures
AssigneeCiba Specialty Chemicals Corporation
InventorsFabienne Cuesta, Ted Deisenroth, Peter Rohringer
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Abstract
The present invention relates to a fluorescent whitening agent comprising a mixture of two symmetrically and one asymmetrically substituted triazinylaminostilbene disulphonic acids, certain novel derivatives, a process for their preparations and use of the mixture for whitening synthetic or natural organic materials, especially paper and for the fluorescent whitening and improvement of sun protection factors of textile materials.
Claims16
A fluorescent whitening agent, which comprises a mixture of compounds of the formulae
- in which
- R1 and R2 are different and each represents —NH2, —NHC1-C4alkyl, —N(C1-C4alkyl)2,
- —NHC2-C4 hydroxyalkyl, —N(C2-C4hydroxyalkyl)2, —N(C1-C4alkyl)(C2-C4 hydroxyalkyl), a morpholino residue or an amino acid or an amino acid amide residue from which a hydrogen atom has been removed from the amino group, each of the rings designated as
- A represent a 5- or 6-membered saturated heterocycle, which may contain one further heteroatom and
- M represents hydrogen, an alkali metal atom, ammonium or a cation formed from an amine.
2 more elements
Dependencies are inferred from the claim text.