Akzo Nobel Chemicals International B.V.
AssigneeAkzo Nobel Chemicals International B.V.
InventorsPeter Harry Johan Greenwood, Hans Lagnemo
Life of this patent
Estimating the term…
Abstract
The present invention relates to a method of producing a dispersion comprising a) mixing an aqueous dispersion of silanised colloidal silica particles with at least one organic compound containing at least two hydroxyl groups to provide an aqueous dispersion of silanised colloidal silica particles and said at least one organic compound, wherein the mixing is performed in the substantial absence of any monofunctional alcohol b) withdrawing water from the formed aqueous dispersion until the remainder of water in the dispersion is below about 10 wt %. The invention also relates to a dispersion obtainable therefrom and the use of the dispersion.
Claims15
A method of producing a dispersion comprising
- a) mixing an aqueous dispersion of silanised colloidal silica particles having a weight ratio of silane to silica ranging from about 0.1 to about 1.5 with at least one organic compound containing at least two hydroxyl groups to provide an aqueous dispersion of silanised colloidal silica particles and said at least one organic compound, wherein the mixing is performed in the substantial absence of any monofunctional alcohol
- b) withdrawing water from the formed aqueous dispersion until the remainder of water in the dispersion is below about 10 wt %.
A dispersion comprising silanised colloidal silica particles having a weight ratio of silane to silica ranging from about 0.1 to about 1.5, and at least one organic compound containing at least two hydroxyl groups, which dispersion is substantially free of any mono-functional alcohol, wherein the water content in the dispersion is below about 10 wt %.
Dependencies are inferred from the claim text.