| abstract |
The present invention relates to a dispersion of porous surface-modified silica particles, comprising a fluid and porous silica particles, the dispersion having a maximum occupying volume fraction Φ max of the particles in the fluid determined by the following relationship: about 0.55 or more. will be: n Equation I n n n n In this formula, n Φ is the volume fraction of solids in the fluid, n Max is the asymptotic (maximum) limit of the occupied volume fraction when the viscosity approaches infinity, n b is the intrinsic viscosity, n η 0 is the viscosity of the fluid, n η is the viscosity of the dispersion. |