Poultice method for extracting hazardous spills
US4483716A · kind A · utility
25Cited by
13References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1982 |
| Grant date | Nov 20, 1984 |
| Priority date | — |
| Expiry date | Sep 30, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/925
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Chemicals spilled on porous surfaces may be removed therefrom by applying to the spill site a poultice in the form of a slurry or paste of finely divided particulate material dispersed in a volatile solvent in which the spilled chemical substance is soluble, allowing the solvent to be absorbed into the porous substrate. The poultice is then allowed to dry, thereby effecting a wicking action causing extraction of the chemical substance from the substrate into the poultice.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.