Oil-in-water photoprotective emulsions containing gemini...

Details Oil-in-water photoprotective emulsions containing gemini... Oil-in-water photoprotective emulsions containing gemini...

2011-06-14

2011-06-14

Richter, Johann R (Department: 1616)

Drug, bio-affecting and body treating compositions

Topical sun or radiation screening, or tanning preparations

C424S078030, C424S486000, C510S493000

Reexamination Certificate

active

07959903

ABSTRACT:
The invention relates to a photoprotective composition containingas liquid phase, an oil-in-water emulsion, emulsified with at least one dimeric surfactant comprising two surfactant units, which may be identical or different, each consisting of a hydrophilic head and a hydrophobic tail and connected to each other, via the hydrophilic heads, by means of a spacer group,at least one photoprotective system capable of screening out UV rays, containing at least one mineral nanopigment based on metal oxide, and optionally at least one organic, preferably hydrosoluble or liposoluble UV-A and/or UV-B screening agent, andat least one associative polymer comprising at least one C8-40fatty chain, and also to a process for preparing such a photoprotective composition.

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