| US 7,553,888 B2 | ||
| Aqueous dispersion | ||
| Peter Greenwood, Göteborg (Sweden); and Hans Lagnemo, Göteborg (Sweden) | ||
| Assigned to Akzo Nobel N.V., Arnhem (Netherlands) | ||
| Filed on Oct. 14, 2003, as Appl. No. 10/683,350. | ||
| Claims priority of application No. 02445132 (EP), filed on Oct. 14, 2002. | ||
| Prior Publication US 2004/0097600 A1, May 20, 2004 | ||
| Int. Cl. C08K 7/18 (2006.01) | ||
| U.S. Cl. 523—212 [524/493] | 18 Claims |
| 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. |