Stable colloidal silica aquasols
AssigneeOndeo Nalco Company
InventorsBruce A. Keiser, Maureen B. Nunn, Cheng-Sung Huang, Dennis L. MacDonald
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Abstract
A stable aquasol containing colloidal silica having a surface area of from about 700 m2/g to about 1100 m2/g, and an S-value of from about 20 to about 50; wherein the colloidal silica is not surface treated; wherein the molar ratio of SiO2/Na2O in the colloidal silica is greater than about 13.0:1 and is less than about 17.0:1; and wherein the aquasols have a percent by weight SiO2 solids level of from about 7.00 percent to about 16.80 percent is described and claimed.
Claims3
A stable aquasol comprising colloidal silica having a surface area of from about 700 m2/g to about 970 m2/g, and an S-value of from about 20 to about 50;
- wherein said colloidal silica is not surface treated;
- wherein the molar ratio of SiO2/Na2O in said colloidal silica is greater than about 13.0:1 and is less than about 17.0:1;
- and wherein said aquasols have a percent by weight SiO2 solids level of from about 7.00 percent to about 16.80 percent.
A stable aquasol comprising colloidal silica having a surface area of from about 790 m2/g to about 970 m2/g, and an S-value of from about 20 to about 50;
- wherein said colloidal silica is not surface treated;
- wherein the molar ratio of SiO2/Na2O in said colloidal silica is greater than about 13.0:1 and is less than about 17.0:1;
- and wherein said aquasols have a percent by weight SiO2 solids level of from about 7.00 percent to about 16.80 percent.
A stable aquasol comprising colloidal silica having a surface area of from about 857 m2/g to about 970 m2/g, and an S-value of from about 20 to about 50;
- wherein said colloidal silica is not surface treated;
- wherein the molar ratio of SiO2/Na2O in said colloidal silica is greater than about 13.0:1 and is less than about 17.0:1;
- and
- wherein said aquasols have a percent by weight SiO2 solids level of from about 7.00 percent to about 16.80 percent.
Dependencies are inferred from the claim text.