Aluminium oxide-containing dispersion, preparation containing this dispersion and a melamine resin and cured product produced by means of this preparation

摘要

Dispersion containing aluminium oxide and water, wherein the aluminium oxide is present - in the form of aggregated primary particles with a BET surface area of 20 to 200 m2/g and has a mean, volume- based aggregate diameter in the dispersion of less than 100 nm, - is modified with organophosphonic acids and/or salts thereof, wherein - the surface is completely or partially modified, - the organophosphonic acids bear at least one amino and/or hydroxy group - and is present in a content of 20 to 70 wt.%, based on the total quantity of the dispersion. Preparation containing this dispersion and a melamine resin. Cured product obtainable from the preparation. Use of the dispersion, of the preparation or of the cured product for the preparation of laminates.