Back to results
US 6,746,666 B1Granted
Micropigment mixture
AssigneeCiba Specialty Chemicals Corporation
InventorHelmut Luther
Life of this patent
Estimating the term…
Abstract
The use of mixtures of micronised organic UV filters in protecting human and animal skin and hair against the damaging effect of UV readiation and the use thereof in cosmetic and pharmaceutical formulations are described. The micronised mixtures used according to the invention cover a broad UV spectrum and therefore exhibit excellent sunscreen properties.
Claims26
A method of protecting human and animal skin and hair against the damaging effects of UV radiation by treating the skin or hair with a cosmetic formulation, comprising a mixture of micronised organic UV filters selected from the group consisting of:
- triazine derivatives, benzotriazole derivatives, amides containing a vinyl group, cinnamic acid derivatives, sulfonated benzimidazoles, Fischer base derivatives, diphenylmalonic acid dinitriles, oxalyl amides, camphor derivatives, diphenyl acrylates, para-aminobenzoic acid (PABA) and derivatives thereof, salicylates and benzophenones, wherein the size of the micronized particles is from 0.02 to 2 μm.
Dependencies are inferred from the claim text.