Hydraulic binder and cement compositions containing photocatalyst particles
US6409821B1 · kind B1 · utility
25Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1999 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Feb 3, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/802
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention provides a hydraulic binder, dry premixes and cement compositions having the improved property of maintaining unaltered, brilliance and coloring quantity for a longer time period. These compositions contain, in bulk, particles of a photocatalyst capable of oxidizing polluting substances in the environment in the presence of light, oxygen and water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.