| 摘要 |
The invention relates to aqueous dispersions that are free or substantially free from volatile organic compounds, containing (A) at least one graft polymer, producible by two-stage or multiple-stage radical copolymerization in an aqueous medium of a) at least one olefinically unsaturated monomer, selected from the group consisting of hydrophilic and hydrophobic olefinical ly unsaturated monomers, and b) at least one olefinically unsaturated monomer o f the general formula R1R2C=CR3R4 (I) that is different from the olefinically unsaturated monomer (a), in which formula R1, R2, R3 and R4 independently represent hydrogen atoms or substituted or unsubstituted alkyl, cycloalkyl, alkylcycloalkyl, cycloalkylalkyl, aryl, alkylaryl, cycloalkylaryl, arylalkyl or arylcycloalkyl groups, with the proviso that at least two of the variable s R1, R2, R3 and R4 represent substituted or unsubstituted aryl, arylalkyl or arylcycloalkyl groups, especially substituted or unsubstituted aryl groups; and (B) hydrophilic nanoparticles. The invention also relates to the production of said dispersions and to their use as coating materials, glues and sealing compounds or to the production thereof.
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