| 摘要 |
<p>A cosmetic process for make-up of keratin materials (especially the skin) involves application of an oil-in-water emulsion composition (A), containing a surfactant system including nonionic surfactant(s) (I) and ionic surfactants (II) having dynamic interfacial tension 7 mN/m or less and solid particles (III) dispersed in the aqueous phase, provided that (i) (A) is stable after storage for 2 months at 45[deg]C or (ii) the number average particle size of (III) is 10 mu m or less. Independent claims are included for: (1) the compositions (A) as new, provided that: (a) the oil droplet size is 500 nm or less, (b) (III) comprise pigment(s) selected from iron, zinc, zirconium and cerium oxides, mica coated with titanium dioxide or bismuth oxychloride, mica coated with iron oxide, ferric blue or chromium oxide and/or organic pigments; (c) the oil phase forms at least 20 wt. % of (A); (d) (A) additionally contains an associative polyurethane as nonionic aqueous thickener; or (e) (I) comprises ethoxylated fatty ester(s) containing 10-80 ethylene oxide (EO) units plus sorbitan fatty acid ester(s); and (2) the production of a make-up composition, involving preparing an emulsion by mixing an aqueous phase and an oil phase under vigorous agitation at 60-95[deg]C then homogenizing under a pressure of 60-180 MPa; preparing a pigment paste by dispersing solid particles in an aqueous phase in presence of (II); and introducing the paste into the emulsion under moderate stirring while maintaining the emulsion structure of the composition.</p> |
