| abstract |
The invention relates to methods for producing modified composite particles by A) mixing one or more finely divided inorganic solids and one or more organic polymers in a solvent or a mixture of several solvents, wherein finely divided inorganic solids are fixed to organic polymers and composite particles are thus formed. The organic polymers are based on a) one or more ethylenically unsaturated monomers having one or more additional functional groups selected from the group comprising carboxylic acid groups or derivatives thereof, silane groups, sulfonic acid groups, sulfate groups, phosphate groups, phosphonate groups, isocyanate groups, amine groups, quaternized amine groups, hydrazine groups, epoxy groups, ether groups, hydroxy groups, or CO groups, and b) one or more ethylenically unsaturated monomers which are different from monomers a), characterized in that subsequently B) one or more ethylenically unsaturated monomers are polymerized in the presence of the composite particles from step A). |