Water resistant cemetitious materials
US4975122A · kind A · utility
22Cited by
3References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1989 |
| Grant date | Dec 4, 1990 |
| Priority date | — |
| Expiry date | Aug 10, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B24/42
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved water-resistant cementitious composition and products made therefrom are provided by forming an aqueous cementitious slurry, as for example of calcined gypsum and adding an organic amine preferably containing a hydroxyl functionality and a silanic hydrogen containing silicone compound. The slurry is set in conventional manner by heating and drying. The resulting product has a high degree of water-resistance and has no adverse effect upon the physical properties of the board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.