Compositions and methods for reducing odor
AssigneePrebona AB
InventorJan-Erik Otterstedt
Life of this patent
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Abstract
A method for reducing odor, by providing a colloidal dispersion of particles of silica having a particle size of from 3 nm to 100 nm, said particles having ions of one or more metals selected from copper, silver, zinc and iron adsorbed at the particle surface, and bringing at least one of said particles into contact with an odorous compound; and/or providing an aqueous silicate solution containing metal ions selected from ions of copper, silver, zinc and iron, and bringing at least one metal ion-carrying silicate particle formed in the solution into contact with an odorous compound. A composition for use in such a method and a product treated by such a composition.
Claims12
A method for reducing odor, comprising
- providing a stable colloidal dispersion of particles of silica having a particle size of from 3 nm to 100 nm, said particles having ions of one or more metals selected from copper, silver, zinc and iron adsorbed at the particle surface, wherein said metal ions are present at a total concentration of from 0.05 mM to 50 mM, and bringing at least one of said particles into contact with an odorous compound.
Dependencies are inferred from the claim text.