Oral preparation comprising an abrasive precipitated silica...

A - Human Necessities – 61 – K

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A61K 8/25 (2006.01) A61K 8/46 (2006.01) A61Q 11/00 (2006.01)

Patent

CA 2452834

An oral composition comprising 0.5 to 10% by weight of an abrasive precipitated silica having a 50 percentile (d50) of particle diameter being 5 µm or less, a 90 percentile (d90) of particle diameter being 15 µm or less and an RDA value of 120 or more, and 0.01 to 5% by weight of at least one of sulfosuccinate surfactants represented by general formula (1) (see formula 1) [wherein either X1 or X2 is R1O-(AO)n,- or the like and the other is M2O-; M1 and M2 are the same or different and each represent hydrogen, alkali metal, etc. ; R1 is C8-22 alkyl, etc. ; AO is C2-3 oxyalkylene and the average number of moles of AO addition polymerization, "n", is 0 to 20; and B is -NH- etc.]

L'invention concerne une préparation orale caractérisée en ce qu'elle contient entre 0,01 et 5 % en poids d'un agent de surface de sulfosuccinate représenté par la formule générale (1) et entre 0,5 et 10 % en poids d'un silica précipité abrasif caractérisé en ce qu'il a 50 percentile (d¿50?) d'un diamètre de particule de 5 µm au maximum, 90 percentile (d¿50?) d'un diamètre de particule de 15 µm au maximum et une valeur RDA d'au moins 120. Dans la formule, X¿1? ou X¿2? représente R¿1?O-(AO)¿n?- ou similaire et X¿1? ou X¿2? restant représente M¿2?O-, M¿1? et M¿2? représentent respectivement et indépendamment l'hydrogène, un métal alcalin ou similaire, R¿1? représente C¿8-22? alkyle ou similaire, AO représente C¿2-3? oxyalkylène, n représente un nombre moyen de molécules ajoutées et est compris entre 0 et 20, et B représente NH- ou similaire.

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