Aqueous systems containing silanes for rendering masonry surfaces water repellant
US4648904A · kind A · utility
101Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1986 |
| Grant date | Mar 10, 1987 |
| Priority date | — |
| Expiry date | Feb 14, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B41/84
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
There is provided an aqueous emulsion of (a) a hydrolyzable silane having the general formula: EQU R.sub.n --Si--(R').sub.4-n wherein R is a hydrocarbyl group containing from 1 to 20 carbon atoms, R' is a hydrolyzable group and n is 1 or 2, and oligomers thereof, e.g., dimers and trimers, and other oligomers, (b) an emulsifying agent having an HLB value of from 4 to 15, and (c) water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.