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US 2011/0033511 A1Published application
Composite particles for use in oral hygiene
AssigneeEvonik Degussa GmbH
InventorsWojciech Pisula, Stephanie Schäffer, Juri Tschernjaew, Arnold Storeck, Rainer Hahn
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Abstract
The present invention relates to functional composite particles for the oral care sector, more particularly for toothpastes and mouthwashes, which are charged with active ingredients which ensure a long-term antimicrobial or antibacterial effect in the oral cavity and hence reduce the formation of plaque and halitosis. The invention further relates to a process for producing these composite particles and also to their use for producing oral hygiene articles.
Claims21
Composite particles as additive for toothpaste and mouthwash, characterized in that they comprise
- a porous carrier of amorphous SiO2, having an average particle size of 3 to 50 μm, preferably 4 to 40 μm, more preferably 5 to 30 μm, very preferably 6 to 25 μm, and a specific surface area of between 50 and 550 m2/g, preferably 100 to 500 m2/g, more preferably 150 to 500 m2/g
- and at least one envelope material,
- the envelope material, following activation in the oral chamber, releasing an active substance, and/or the composite particles further comprising at least one active substance.
Dependencies are inferred from the claim text.