Stable colloidal silica aquasols
US6486216B1 · kind B1 · utility
26Cited by
22References
3Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 27, 2000 |
| Grant date | Nov 26, 2002 |
| Priority date | — |
| Expiry date | Jul 31, 2020 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/68
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.