DUPLEX COATED COLOR LAKE AND OTHER POWDERS, THEIR PREPARATION AND COSMETIC AND OTHER USES

摘要

Hard-to-coat color lakes and other powders useful in cosmetics and other industries are coated with a duplex coating system comprising basic and nonbasic functionalized coating components, for example a basic functionalized aminopolysiloxane and a nonbasic alkoxypolysiloxane. Control of bleeding of a color lake into aqueous media is possible. A novel duplex coating system, treatment process, treated powder and cosmetic formulation containing same are disclosed.