Emulsion, h / e containing a uv filter, a polar oil and a diblock copolymer (polystyrene) - block - poly (acrylic acid - stat - alkyl acrylate in c1 - c4)

摘要

The present invention relates to an oil-in-water emulsion - to - water comprising, in a physiologically acceptable medium: a) at least one continuous aqueous phase; b) at least one fatty phase dispersed in said aqueous phase comprising at least one polar oil; c) at least one organic uv-screening lipophiled) and optionally at least one uv filter insoluble inorganic and / or a uv filter insoluble organic; e) at least a diblock copolymer (block a) - (blocb) in which - the block comprises at least of units deriving from styrene; - the unit b comprises at least (a) of units deriving from acrylic acid in acidic form or salified and (b) at least of the units derived from an alkyl acrylate in c1 - c4.la present invention also relates to the use of at least a diblock copolymer as defined above in a fluid emulsion of oil into water containing a) at least at least one fatty phase comprising at least one polar oil, b) at least one non-silicon-containing lipophilic organic and optionally c) at least one uv filter, inorganic and / or at least one filter insoluble organic, for the purpose of improving the cosmetic properties and / or to improve the stability of the emulsion and / or in order to increase the sun protection factor (fps) and / or to improve the water persistence of the photoprotective power.