C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
C09B 61/00 (2006.01) A61K 8/49 (2006.01) A61Q 5/10 (2006.01) C09B 57/00 (2006.01) C09B 63/00 (2006.01) C09B 67/02 (2006.01)
Patent
CA 2222378
This invention concerns a composite melanic pigment in the form of particles with a spherical core, less than 1 micrometer in diameter, which is at least part wax and part surfactant, and an external layer around the core which consists of at least one compound produced by the oxidative polymerization of a melanic-type pigment precursor. The invention also involves the uses of the pigment in question, in powder or water dispersion form, in cosmetic formulations, specifically in products used for hair colouring and/or makeup and/or care of keratinous material such as skin, hair and nails.
La présente invention a trait à un pigment mélanique composite sous forme de particules constituées d'un noyau sphérique de diamètre inférieur à 1 µm comprenant au moins une cire et au moins un tensioactif et d'une couche externe enveloppant ledit noyau comprenant au moins un composé résultant de la polymérisation oxydative d'un précurseur de pigment de type mélanique. L'invention concerne également les utilisations dudit pigment sous forme de poudre ou sous forme de dispersion aqueuse, dans des compositions cosmétiques notamment dans des produits de coloration et/ou de maquillage et/ou de soin des matières kératiniques telles que la peau, les cheveux et les ongles.
Lety Alain
Nicolas-Morgantini Luc
Vanlerberghe Guy
L'oreal
Robic
LandOfFree
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