Henkel Kommanditgesellschaft Auf Aktien (henkel Kgaa)

Henkel Kommanditgesellschaft Auf Aktien

Hans-Martin Sauer

Rolf Hempelmann

Elisabeth Cura

Sohaib Elgimiabi

Frank Meyer

Stefan Spiekermann

Marcel Roth

Olaf Lammerschop

Christian N Kirsten

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 on the basis of said preparations.

Nanoparticulate preparation

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.

Process for heating a substrate, which contains, relative to the total weight of the substrate, 0.1 to 70 wt. % of metallic, magnetic, ferrimagnetic, ferromagnetic, antiferromagnetic or superparamagnetic particles having an average particle size of between 1 and 5000 nm, wherein the substrate is exposed to electromagnetic radiation, characterized in that the electromagnetic radiation comprises microwave radiation with a frequency in the range from 1 to 300 GHz and the substrate is simultaneously exposed to a direct-current magnetic field, the field strength of which is at least twice the strength of the earth's magnetic field; use of the process for producing or detaching adhesive bonds; device for the simultaneous production of microwave radiation with a frequency within the range from 1 to 300 GHz and a direct-current magnetic field, the field strength of which is at least twice the strength of the earth's magnetic field.

Ferromagnetic resonance excitation and its use for heating substrates that are filled with particles

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Darmstadt, Germany

Hans-Martin Sauer