Concrete coloring compositions and methods
US8092555B2 · kind B2 · utility
7Cited by
14References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2008 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Feb 3, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/82
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides acidic compositions and methods that are adapted to impart color to cementitious or mineral substrate surfaces. Specifically, the present invention relates to acidic compositions and methods adapted to treat cementitious or mineral substrate surfaces that have the advantage of using a less corrosive acid-based solution. The acidic composition incorporates species including a weak base in equilibrium with a conjugate acid. The presence of such species moderates the corrosive behavior of the acid while still allowing excellent coloring action to occur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.