An optical brightener mixture composition, its production...

Details An optical brightener mixture composition, its production... An optical brightener mixture composition, its production...

C - Chemistry, Metallurgy

11

D

C11D 3/42 (2006.01) D06L 3/12 (2006.01) D21H 21/30 (2006.01)

Patent

CA 2426776

The invention relates to an optical brightener mixture (W) comprising optical brighteners (A) of formula (Ia), and (B) of formula (Ib) and optionally (C) of formula (Ic) as defined herein, their concentrated aqueous solutions (S), their production and their use.

Cette invention concerne un mélange (W) d'azurants optiques contenant les azurants optiques (A), (B) et éventuellement (C), représentés respectivement par les formules (Ia), (Ib) et (Ic), correspondant à la signification donnée dans la description. Cette invention concerne également les solutions aqueuses concentrées, la fabrication et l'utilisation de ces azurants optiques.

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