| 摘要 |
The invention relates to a treatment method, which promotes the removal of dirt, for the surfaces of textiles and non-textiles. According to said metho d, cationically modified, hydrophilic nanoparticles, based on cross-linked polymers, are applied from an aqueous dispersion to the surface of the materials. Said cross-linked polymers consist of (a) between 60 and 99.99 wt . % of one or more ethylenically unsaturated monomers containing carboxyl groups, or the salts thereof, (b) between 0 and 40 wt. % of one or more wate r- insoluble, monoethylenically unsaturated monomers, (c) between 0.01 and 30 w t. % of one or more ethylenically polyunsaturated monomers, (d) between 0 and 2 5 wt. % of one or more monomers containing sulphonic acid and/or phosphonic acid, or the salts thereof, (e) between 0 and 30 wt. % of one or more water- soluble, non-ionic monomers. The dispersion of the hydrophilic nanoparticles can be stabilised with anionic, non-anionic and/or betainic emulsifiers and/ or protective colloids. The hydrophilic nanoparticles have a particle size of between 10 and 2 .mu.m and are modified cationically by covering their surfa ce with one or more cationic polymers, one or more polyvalent metallic ions and/or one or more cationic surfactants.
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