Abstract: The invention relates to composite particles, comprising a carrier particle and an at least partial surface coating, the carrier particle comprising a quartz and a layered silicate and the surface of the composite particle having at least one hydrophilic region and at least one hydrophobic region. The invention also relates to a method for producing composite particles, comprising the steps: a) providing carrier particles, comprising a quartz and a layered silicate, b) introducing the carrier particles into a mixing device, c) charging the carrier particles with a coating composition, d) coating the carrier particles with the coating composition by mixing the carrier particles with the coating composition, with the introduction of shear energy, e) subjecting the coated carrier particles to temperature. In addition, the invention relates to a mineral cast part or to a composite workpiece which comprises the above-described composite particles.

Abstract: The invention relates to a filler for a surface-treatment composition, the filler comprising particles which have a surface coating which gives the respective particle a positive surface charge, and to the use of a particle, which comprises a carrier particle and a surface coating which gives each particle a positive surface charge, for treating wood.

Abstract: The present invention relates to a filler for a paint composition, wherein the filler comprises a calcinate having particles with an average particle size (d50, SediGraph III) in the range between 3 ?m and 50 ?m and a mullite content of 30-70 measured as mullite index. The invention is characterised in that the bulk density of the filler is >450 g/L. The invention also relates to a paint composition characterised in that it comprises a filler which has a bulk density >450 g/L and comprises a calcinate which has particles with a mean particle size (d50, SediGraph III) in the range between 3 ?m and 50 ?m and a mullite content of 30-70 measured as mullite index. Furthermore, the invention relates to uses of such a filler for the preparation of a paint composition.

Abstract: The invention relates to a filler for a surface-treatment composition, the filler comprising particles which have a surface coating which gives the respective particle a positive surface charge, and to the use of a particle, which comprises a carrier particle and a surface coating which gives each particle a positive surface charge, for treating wood.