Mixtures of fluorescent whitening agents
AssigneeCiba Specialty Chemicals Corporation
InventorsJean-Jacques Donze, Marie Meyberger, Michael Milde, Volker Papendick, Josef Zelger
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Abstract
The present invention relates to a mixture of fluorescent whitening agents comprising 11 to 20% by weight of a compound of formula (1), and 80 to 89% by weight of a compound of formula (2), wherein R1 denotes hydrogen, C1-C6alkyl, C5-C14aryl or C6-C24aralkyl and X is a bivalent radical of formula (3), (4) or (5) compositions containing the mixture and the use of the compositions for whitening synthetic fibres, in particular, polyester.
Claims15
A mixture of fluorescent whitening agents comprising 11 to 20% by weight of a compound of formula
- and 80 to 89% by weight of one or more compounds of formula
- wherein R1 denotes hydrogen, C1-C6alkyl, C5-C14aryl or C6-C24aralkyl and
- X is a bivalent radical of formula (3), (4) or (5)
10-11. (canceled)
Dependencies are inferred from the claim text.