Methods for treatment of lead-containing surface coatings and soil
US5741366A · kind A · utility
1Cited by
19References
16Claims
0Family size
Inventors
Key dates
| Filing date | Feb 9, 1996 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Feb 9, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62D2101/43
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method is provided, to render non-hazardous, surfaces which are coated with lead-based paints. A composition comprising an aqueous mixture of hydrogen peroxide, ammonium hydroxide, nitric acid and acetic acid is poured on the surface and, after a time, water is poured onto the surface to remove the lead-based paint. The method is effective on surfaces which may be comprised of wood, metal, concrete, wallboard or plaster without destroying the integrity of these surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.