Process for water-repellent impregnation of masonry
US5250106A · kind A · utility
8Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1992 |
| Grant date | Oct 5, 1993 |
| Priority date | — |
| Expiry date | Jun 1, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/27
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for rendering masonry water-repellent which comprises treating masonry which is alkaline, with a highly dispersed water-diluted impregnating composition which comprises (A1) an organoalkoxysilane and/or (A2) an organosiloxane containing alkoxy groups and (B) a water-soluble organic or inorganic acid salt of an organopolysiloxane, which in addition to other organosiloxane units contains siloxane units which carry monovalent SiC-bonded radicals containing basic nitrogen in amounts of at least 0.5% by weight, based on the weight of the organopolysiloxane. The treated masonry is particularly resistant to rising dampness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.