COLORED MICRONIZED SPHERICAL POLYMER POWDER AND COSMETIC COMPOSITION THEREOF
The present invention provides a colored micronized polymer powder for the use in cosmetics, the powder comprising at least one polymer wherein the particles of the colored micronized polymer powder having a spherical shape and an average particle size in the range of 0.1 to 100 μm. The present invention provides also a cosmetic composition comprising the at least one colored micronized polymer powder according to the invention. The powder according to the invention makes it possible to provide ultra-fine colored micronized polymer powders having a desired coloration as well as high-performed voluminizing effect, soft focus effect, mattifying effect and long lasting effect in cosmetic end-use applications such as mascaras and make-up.
1 . A colored micronized polymer powder for the use in cosmetics, the colored micronized polymer powder comprising 40 to 99 wt-% of at least one functionalized polymer, the wt-% based on the total weight of the colored micronized polymer powder, and the particles of the colored micronized polymer powder having a spherical shape and an average particle size in the range of 0.1 to 100 μm.
2 . The powder according to claim 1 comprising
A) 40 to 99 wt-% of the at least one functionalized polymer,
B) 0.1 to 60 wt-% of at least one pigment and/or other coloring agent, filler, extender, modifier and/or other additive, and
C) 0 to 30 wt-% of at least one polymer different from the at least one polymer of A),
the wt-% based on the total weight of the colored micronized polymer powder.
3 . The powder according to claim 1 wherein the polymer is a functionalized polyolefine.
4 . The powder according to claim 3 wherein the polyolefin is ethylene acid copolymer, ionomeric polyolefin polymer or mixtures therefrom.
5 . The powder according to claim 1 wherein the particles having an average particle size in the range of 0.1 to 20 μm.
6 . The powder according to claim 1 wherein the particles having a particle size distribution of D90 value between 20 and 75 μm.
7 . A method for preparation of the colored micronized polymer powder according to claim 1 by forming a mixture of the melted or soften polymer with the further components of the powder in an aqueous medium, sharing under pressure at a temperature above the melting point of the polymer until the polymer particle size is reduced within the desired average particle size range, and cooling the resulted slurry of particles.
8 . A cosmetic composition comprising the at least one colored micronized polymer powder of claim 1 in a range of 1 to 50 wt-%, the wt-% based on the total weight of the cosmetic composition.