Toothpaste composition with abrasive calcium-based particles having a coating comprising an hydrophobic product
OwnerAdrien Dromard, Sylvie Lavaultinventors
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Abstract
Abrasive particles which can be used particularly as an abrasive agent in toothpaste compositions and which comprises a core of abrasive calcium-containing material, e.g. a precipitated calcium carbonate, which is coated with a fluorine-compatibilizing hydrophobic coating, e.g. sodium stearate, are provided. Methods of obtaining these abrasive particles, as well as their use in toothpaste compositions are also provided. In these abrasive particles, the compatibility between the abrasive agent and the fluorinated agent is significantly improved.
Claims65
A toothpaste composition comprising abrasive particles which comprise a calcium-based solid material and at least one fluorinated agent, wherein the abrasive particles have a calcium-containing material-based core and a calcium-containing material-based coating on said core which comprises at least one hydrophobic product comprising at least one fatty chain.
Abrasive particles usable particularly as an abrasive agent in toothpaste compositions comprising, a core which is based on a solid calcium-containing material, and a coating on said core which comprises at least one hydrophobic product comprising at least one fatty chain.
A method of obtaining abrasive particles consisting essentially of:
- placing, in a liquid medium, a hydrophobic product comprising at least one fatty chain, in the presence of particles of calcium-containing material;
- heating and agitating the slurry thus formed so as to enable the coating of the particles;
- and
- drying said slurry so as to remove the liquid, to convert this slurry into a powder of particles which are formed from a core of calcium-containing material coated with a hydrophobic product-based coating.
A method of obtaining abrasive particles consisting essentially of:
- placing a carboxylic acid salt in the form of an aqueous solution thereof in the presence of an aqueous slurry particles of calcium-containing material in a coating container, and mixing so as to form a main slurry of the precipitation;
- and
- producing a powder of abrasive particles by drying said main slurry.
Dependencies are inferred from the claim text.