Clear antiperspirants and deodorants made with...

Details Clear antiperspirants and deodorants made with... Clear antiperspirants and deodorants made with...

A - Human Necessities

61

K

A61K 8/898 (2006.01) A61K 8/89 (2006.01) A61Q 15/00 (2006.01)

Patent

CA 2420518

Clear antiperspirant and/or deodorant compositions, especially clear sticks having good structural integrity, can be formed by incorporating at least 8% by weight based on the total weight of the composition of a selected siliconized polyamide into a product formulated with at least one silicone material and at least one non-silicone emollient. The siliconized polyamides have the silicone portion in the acid side of the polyamide and are selected so that: (a) the degree of polymerization in the silicone portion is in the range of 12-18; (b) the average molecular weight of the siliconized polyamide is at least 50,000 daltons with at least 95% of the polyamide having a molecular weight greater than 10,000 as measured by size exclusion chromatography; and (c) the polydispersity is less than 20.

L'invention concerne des compositions antisudorale et déodorante claires, spécialement des bâtonnets de bonne intégrité structurale, pouvant être formés par incorporation, d'au moins 8 % en poids de la composition d'un polyamide siliconé choisi, dans un produit formulé avec au moins un matériau silicone et au moins une substance émolliente sans silicone. La partie silicone des polyamides siliconés se situe du côté acide du polyamide et elle est sélectionnée de façon que: (a) le degré de polymérisation de la partie silicone se situe dans le domaine de 12 à 18; (b) le poids moléculaire moyen du polyamide siliconé soit d'au moins 50000 daltons, avec au moins 95 % du polyamide possédant un poids moléculaire supérieur à 10000, mesuré par chromatographie d'exclusion de taille, et (c) la polydispersité soit inférieure à 20.

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