Dye-containing pellets and their use

A - Human Necessities – 61 – K

Patent

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Details

A61K 8/11 (2006.01) A61Q 5/06 (2006.01) A61Q 5/10 (2006.01)

Patent

CA 2640350

The present patent application relates to dye-containing pellets obtained by (a) homogeneous mixing of a starting material containing at least one natural and/or synthetic dye with a suitable carrier material and then coating with a suitable encapsulation material or (b) coating a suitable carrier material with a mixture of at least one natural and/or synthetic dye and at least one suitable encapsulation material, to the use of said pellets for preparing colorants for keratin fibers and to the colorants based on said pellets. Furthermore the present patent application relates to the use of these pellets for increasing the shine of the keratin fibers, reducing the scalp colouring of hair dyes, improving the protection for the cortex, increasing the colourant efficiency and reducing the load of colourants, and improving the wash resistance.

La présente invention concerne des pastilles contenant un colorant obtenues (a) en mélangeant de manière homogène un matériau de départ contenant au moins un colorant naturel et/ou synthétique avec un matériau support approprié, puis en enduisant d'un matériau d'encapsulation approprié ou (b) en enduisant un matériau support approprié d'un mélange d'au moins un colorant naturel et/ou synthétique et d'au moins un matériau d'encapsulation approprié, l'utilisation desdites pastilles pour la préparation de colorants pour fibres kératiniques et les colorants utilisant lesdites pastilles. La présente invention concerne également l'utilisation de ces pastilles pour accroître la brillance des fibres kératiniques, pour réduire la coloration du cuir chevelu par les colorants capillaires, pour améliorer la protection du cortex, pour accroître l'efficacité des colorants et réduire la charge des colorants, ainsi que pour améliorer la résistance au lavage.

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