Aqueous dispersion of silicic anhydride and abrasive composition comprising the dispersion
US4664679A · kind A · utility
16Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1985 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Nov 25, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L21/30625
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An aqueous dispersion of silicic anhydride, comprising an aqueous solvent and silicic anhydride dispersed therein, wherein the silicic anhydride has a surfacial silanol group density of from 0.3 to 3 per 100 .ANG..sup.2 and is obtained by the surface treatment of silicic anhydride produced by a dry method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.