Patent ID: 7553888
Filing Date: 2009-06-30
Classification: B82Y,C01B,C01P,C04B,C08K,C09C,C09D,Y02W

Abstract:
1. 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.