Mixtures of fluorescent whitening agents
AssigneeCiba Specialty Chemicals Corporation
InventorsDieter Reinehr, Hanspeter Sauter, Hans Kramer, Werner Schreiber
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Abstract
The present invention relates to a mixture of fluorescent whitening agents comprising 20 to 70% by weight of a compound of formula (1), 30 to 80% of a compound of formula (2) and 0.5 to 5% of a compound of formula (3), compositions containing the mixture and the use of the compositions for whitening synthetic fibers, in particular polyester.
Claims7
A mixture of fluorescent whitening agents comprising 55 to 70% by weight of a compound of formula
- 30 to 45% of a compound of formula
- 0.5 to 3% of a compound of formula
A method of whitening synthetic fibres which comprises treating said fibres with a mixture of fluorescent whitening agents comprising 20 to 55% by weight of a compound of formula
- 30 to 45% of a compound of formula
- 0.5 to 3% of a compound of formula
Dependencies are inferred from the claim text.