Process for the separation of 2-chloro-1,1-difluoroethane and trans-dichloroethylene
US10227277B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Feb 15, 2016 |
| Grant date | Mar 12, 2019 |
| Priority date | — |
| Expiry date | Feb 15, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/386
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to the separation of a mixture comprising 2-chloro-1,1-difluoroethane (R142) and trans-dichloroethylene (TDCE) by extractive distillation and more particularly to a separation process wherein the TDCE is removed selectively by extractive distillation, thus leading to purified 2-chloro-1,1-difluoroethane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.