Back to results
US 9,283,154 B2Granted
Method and compositions for improving appearance of skin
AssigneeELC Management LLC
InventorsIsaac David Cohen, Phillip Cummins, Milan Franz Sojka, David Walter Culhane, Christina G. Fthenakis, Jennifer L. Sobel, John Dudley Dreher, Yelena Mikhaylova
Life of this patent
Estimating the term…
Abstract
A method for making a composite particulate comprised of a colorant portion and a clear thermoplastic portion and cosmetic compositions containing the composite particulate.
Claims10
A method for making a composite particulate in fused agglomerate form and which is not a collapsed microsphere having a portion comprised of at least one colorant and a portion comprised of at least one clear or translucent thermoplastic material comprising the steps of:
- (a) combining one or more colorants in particulate form with polymethylmethacrylate (PMMA) in the form of solid spheres;
- (b) adding solvent in an amount sufficient to swell the PMMA and cause the fused agglomerates of colorant and PMMA to form;
- (c) removing the solvent and causing the mixture to dry,
- (d) subjecting the dried mixture to milling to form fused agglomerates having a particle size ranging from 1 to 100 microns.
1 more element
Dependencies are inferred from the claim text.