Fine suspensions of poorly soluble calcium salts and their...

Details Fine suspensions of poorly soluble calcium salts and their... Fine suspensions of poorly soluble calcium salts and their...

A - Human Necessities

61

K

A61K 8/24 (2006.01) A61K 8/04 (2006.01) A61K 8/21 (2006.01) A61Q 11/00 (2006.01)

Patent

CA 2356115

The invention relates to suspensions of poorly water-soluble calcium salts, selected from the phosphates, fluorides and fluorophosphates, in liquid media, preferably in water, containing suspended primary particles between 5 and 50 nm in diameter and between 10 and 150 nm in length. Said suspensions are stabilized by a contents of at least 0.01 % by weight, in relation to the weight of the suspension, of a water-soluble surface-active agent or water-soluble polymeric protective colloid so as to prevent agglomeration. The suspensions are suitable as remineralizing components in compositions used for the cleaning and care of the teeth.

L'invention concerne des suspensions de sels de calcium peu solubles dans l'eau, choisis parmi les phosphates, les fluorures et fluorophosphates, dans des milieux liquides, de préférence dans l'eau avec des particules primaires en suspension, ces particules ayant un diamètre de 5 à 50 nanomètres et des longueurs de 10 à 150 nanomètres. Ces suspensions sont stabilisées par une teneur d'au moins 0,01 % en poids, par rapport au poids de la suspension, d'un tensio-actif soluble dans l'eau ou d'un colloïde protecteur polymère soluble dans l'eau contre l'agglomération. Les suspensions conviennent comme composantes reminéralisantes dans des compositions destinées au nettoyage et à l'hygiène dentaire.

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