Method of hydrophobing silica
US5001183A · kind A · utility
13Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 1990 |
| Grant date | Mar 19, 1991 |
| Priority date | — |
| Expiry date | May 31, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2993
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of producing hydrophobic colloidal silica is disclosed. The method comprises combining an aqueous colloidal silica dispersion, polyorganosiloxane, and anionic surfactant to yield a stable aqueous emulsion of hydrophobic colloidal silica. The emulsion may be further processed by evaporating the water to yield a white material which may be easily ground to a fine powder of hydrophobic colloidal silica. This powder is useful as a reinforcement for silicone rubber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.