Process for the preparation of an aqueous effervescent...

A - Human Necessities – 61 – K

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167/158, 167/300

A61K 9/46 (2006.01) A61K 8/42 (2006.01) A61K 8/49 (2006.01) A61Q 3/00 (2006.01)

Patent

CA 2027483

The invention concerns a process for preparing an effervescent aqueous solution with an emollient action on nail cuticles, designed for cosmetic and/or pharmaceutical treatment, characterized by the fact that, essentially simultaneously, anhyrdrous solid compounds are introduced into an aqueous medium at a ratio of 1 g to 15 g per 100 g of aqueous medium, in the following proportions per 100 parts by weight for all the anhydrous solid compounds introduced: 10 to 25 parts by weight of urea, and 50 to 90 parts by weight of at least one alkaline and/or ammonium bicarbonate and pyrolidone carboxylic acid (PCA), the weighting factor of the bicarbonate(s) to PCA being from 1/4 to 4/1. The invention also concerns a composition for the preparation of the effervescent aqueous solution and a cosmetic treatment for nail cuticles using the effervescent aqueous solution.

L'invention concerne un procédé pour la préparation d'une solution aqueuse effervescente ayant une action émolliente sur la cuticule des ongles, destinée à un traitement cosmétique et/ou pharmaceutique, caractérisé par le fait que l'on introduit sensiblement simultanément, dans un milieu aqueux, des composés solides anhydres à raison de 1 g à 15 g pour 100 g de milieu aqueux, dans les proportions suivantes rapportées à 100 parties en poids pour l'ensemble des composés solides anhydres introduits: 10 à 25 parties en poids d'urée, et 50 à 90 parties en poids d'au moins un bicarbonate alcalin et/ou d'ammonium et d'acide pyrrolidone carboxylique (PCA), le rapport pondéral du (des) bicarbonate(s) au PCA étant compris entre 1/4 et 4/1. L'invention concerne aussi une composition pour la préparation de la solution aqueuse effervescente et un traitement cosmétique de la cuticule des ongles à l'aide de la solution aqueuse effervescente.

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