Aqueous dispersion
AssigneeAkzo Nobel N.V.
InventorsPeter Greenwood, Hans Lagnemo
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Abstract
The invention relates to a method of producing an aqueous dispersion comprising mixing at least one silane compound and colloidal silica particles to form silanized colloidal silica particles, mixing said silanized colloidal silica particles with an organic binder to form the dispersion. The invention also relates to a dispersion obtainable by the method, and the use thereof.
Claims18
A method of producing a stable aqueous dispersion without the presence of any water-miscible organic solvents or optionally comprising one or more water-miscible organic solvents, if present, in a total amount of up to 20% by volume of the total volume, said method comprising mixing at least one silane compound and colloidal silica particles, said colloidal silica particles being present in a sol having an S-Value from about 30 to about 90 and a silica content is from about 20 to about 80 wt %, in an aqueous solvent to form silanized colloidal silica particles, mixing in said aqueous solvent comprising silanized colloidal silica particles a latex to form said stable aqueous dispersion, wherein the weight ratio of silica to latex is from about 0.01 to about 1.
A stable aqueous dispersion without the presence of any water-miscible organic solvents or optionally comprising one or more water-miscible organic solvents, if present, in a total amount of up to 20% by volume of the total volume, obtained by mixing at least one silane compound and colloidal silica particles, said colloidal silica particles being present in a sol having an S-Value from about 30 to about 90 and a silica content is from about 20 to about 80 wt %, to form silanized colloidal silica particles in an aqueous solvent, mixing in said aqueous solvent comprising silanized colloidal silica particles a latex to form said stable aqueous dispersion, wherein the weight ratio of silica to latex is from about 0.01 to about 1.
A stable aqueous dispersion without the presence of any water-miscible organic solvents or optionally comprising one or more water-miscible organic solvents, if present, in a total amount of up to 20% by volume of the total volume, said dispersion comprising silanized colloidal silica particles and a latex, wherein the weight ratio of silica to latex is from about 0.01 to about 1 and wherein silanized colloidal silica particles are derived from a silica sol having an S-Value from 30 to 90.
Dependencies are inferred from the claim text.