Laundry treatment compositions comprising a photostable dye...

Details Laundry treatment compositions comprising a photostable dye... Laundry treatment compositions comprising a photostable dye...

C - Chemistry, Metallurgy

11

D

C11D 3/40 (2006.01) C11D 3/00 (2006.01)

Patent

CA 2528127

A particulate laundry detergent treatment composition which comprises a surfactant and from 0.0001 to 0.01 wt% of a photostable dye which is substantive to cotton. The photostable dye is a bis-azo direct violet dye. The composition improves whiteness of the laundry.

L'invention concerne une composition pour le traitement du linge qui comprend un tensioactif et entre 0,0001 et 0,1 % en poids d'une combinaison de colorants produisant sur l'oeil humain un effet visuel de colorant unique qui présente une longueur d'onde d'absorption de crête sur le coton comprise entre 540 nm et 650 nm, de préférence entre 570 nm et 630 nm, ladite combinaison comprenant un colorant photostable qui se fixe au coton de manière substantielle.

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