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US 7,479,288 B2Granted
Nanoparticulate preparation
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorsHans-Martin Sauer, Elisabeth Cura, Sohaib Elgimiabi, Rolf Hempelmann, Frank Meyer, Stefan Spiekermann
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Abstract
The invention relates to nanoparticulate preparations containing at least one mixed metal oxide in the form of supramagnetic, nanoscale particles, methods for heating such a preparation, and methods for producing and dissolving adhesive compounds of the basis of said preparations.
Claims10
A composition comprising:
- a coherent phase;
- and
- a particulate phase dispersed therein, the particulate phase comprising surfactant and superparamagnetic, nanoscale particles with a volume-averaged particle diameter of 2 to 100 nm, said particles comprising at least one metal mixed oxide with the general formula:
- MIIMIIIO4
- wherein:
- MII comprises at least two different divalent metals, and
- MIII comprises at least one trivalent metal,
- with the proviso that the mixed oxide is electrically neutral, wherein the particles are at least partially coated with a single-layer or multi-layer coating containing at least one compound with ionogenic surface-active groups, ionic surface active groups, or nonionic surface groups, or any combination thereof.
5 more elements
Dependencies are inferred from the claim text.