Anhydrous creams, lotions and gels

Details Anhydrous creams, lotions and gels Anhydrous creams, lotions and gels

A - Human Necessities

61

K

A61K 47/32 (2006.01) A61K 8/67 (2006.01)

Patent

CA 2431306

Substantially anhydrous compositions having a viscosity greater then 1000 centipoise are prepared by combining a polar solvent with a thickening agent selected from the group consisting of acrylic acid polymers and polyacrylamides. These compositions are particularly suited for topical use to deliver beneficial agents to the skin of a user. Being anhydrous, the compositions are particularly well suited to effectuate the delivery of beneficial agents that are unstable over time in aqueous systems.

L'invention porte sur des compositions sensiblement anhydres présentant une viscosité supérieure à 1000 centipoises et préparées grâce à la combinaison d'un solvant polaire avec un agent épaississant choisi dans le groupe de polymères d'acide acrylique et de polyacrylamides. Ces compositions conviennent tout particulièrement à un usage topique permettant l'apport d'agents bénéfiques à la peau d'un utilisateur. Leur propriété anhydre fait que ces compositions conviennent tout particulièrement pour réaliser l'apport d'agents bénéfiques qui, avec le temps, deviennent instables dans les systèmes aqueux.

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