| abstract |
The present invention relates to a dispersion of modified silica particles, of porous surface, consisting of a fluid and porous particles, wherein the maximum occupied fractional volume (? Max) of the particles in the dispersion is at least approximately 0.55, determined from relation (I), where? is the occupied fractional volume of solids in the fluid,? max is the asymptotic (maximum) limit of the occupied fractional volume when the viscosity approaches infinity, b is the intrinsic viscosity,? 0 is the viscosity of the fluid and? It is the viscosity of the dispersion. (see formula (I)). |