Nanoparticles, a process for the modification of their surface, dispersion of the nanoparticles, process for their preparation and their use

摘要

Surface-modified nanoparticles, whose surface is almost completely or completely with (A) modifying groups, the - via verküpfende functional groups (a) are bonded covalently to the surface and - space-maintaining, inert groups (b) and - by way of the groups (b) with the groups (a) connected, reactive functional groups (c), the relative to the reactive functional groups of the surface to be modified are inert, contain, (B) modifying groups, the - via verküpfende functional groups (a) are bonded covalently to the surface and - inert groups (d) with a smaller hydrodynamic volume v_H than that of the spacing, inert groups (ab), and (C) modifying groups, the - via verküpfende functional groups (a) which contain at least one silicon atom, are bonded to the surface, - inert groups (e) and contain - a smaller hydrodynamic volume v_H as the modifying groups (a) have, is covered; dispersions containing the nanoparticles, process for their preparation and their use.