Stable cosmetic emulsion with polyamide gelling agent

A - Human Necessities – 61 – K

Patent

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Details

A61K 6/00 (2006.01) A61K 7/02 (2000.01) A61K 7/021 (2000.01) A61K 7/027 (2000.01) A61K 7/032 (2000.01)

Patent

CA 2451684

The present invention relates to a gelled cosmetic emulsion comprising an oil phase, an aqueous phase and a gelling system which contains at least one non- siloxane based polyamide in a sufficient amount to gel the emulsion. The polyamide can have an tertiary amide, ester, acid, or amine terminal end group. The emulsion is stabilized with an alkylene oxide containing emulsion stabilizer. The polyamide resin is stabilized with a resin stabilizer containing an atom with a certain electronegativity. The emulsions of the present invention are substantially transparent and when colorants are added the color is especially bright and clear. The emulsions are used in lipstick and mascara products as well as other gel and stick products.

La présente invention concerne une émulsion cosmétique gélifiée comportant une phase huileuse, une phase aqueuse et un système de gélification contenant au moins un polyamide non siloxane en une quantité suffisante pour obtenir la gélification de l'émulsion. Le polyamide peut comporter un amide tertiaire, un acide, un ester, ou un groupe terminal amine d'extrémité. L'émulsion est stabilisée avec un oxyde d'alcoylène contenant un stabilisateur d'émulsion. La résine polyamide est stabilisée avec un stabilisateur de résine comprenant un atome présentant une certaine électronégativité. Les émulsions de la présente invention sont sensiblement transparentes et lorsque des colorants sont ajoutés la couleur est particulièrement brillante et nette. Les émulsions sont utilisées dans des produits de rouges à lèvres et de mascara ainsi que dans d'autres produits de type gel ou bâton.

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