Patent ID: 6488941
Filing Date: 2002-12-03
Classification: A61K,A61Q,Y10S

Abstract:
A composition in the form of an oil-in-water (O/W) emulsion, comprising an oily phase dispersed in an aqueous phase, which comprises a mixture of at least two nonionic emulsifiers, the mixture being liquid at ambient temperature and having an HLB ranging from about 6 to 13, and in that the oily phase comprises at least about 5% by weight of one or more waxes based on the total weight of the composition, at least one of the waxes being a wax having a starting melting temperature of greater than or equal to about 50Â° C., wherein the mixture of emulsifiers comprises (1) at least one nonionic emulsifier having an HLB equal to or greater than about 13, and (2) at least one nonionic emulsifier having an HLB equal to or less than 5; and whereinprior to mixing with said aqueous phase, said oily phase is in the form of a soft paste having a dynamic viscosity of between 3 and 35 PaÂ·s at 25Â° C. measured with a Contraves TV rotary viscometer equipped with an MS-r4 rotor at a frequency of 60 Hz.