Method of removing toxic agents for trichlorotrifluoroethane
US4842746A · kind A · utility
15Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1986 |
| Grant date | Jun 27, 1989 |
| Priority date | — |
| Expiry date | Jun 16, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/38
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed is a method of and apparatus for removing chemical nerve agents such as tabun, sarin and soman and chemical blister agents such as mustard gas and lewisite from a cleaning solvent such that the solvent is rendered contaminant free and safely resuable in future cleaning operations. The solvent, trichlorotrifluoroethene and the contaminants are soluble in one another and are all of non-polar configuration. Removal is effected by preferential adsorption of the contaminants from the solvent. Effective adsorbents are Fuller's Earth, activated charcoal, activated alumina and silica gel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.