Process for purification of 1,2-dichloroethane
US4141922A · kind A · utility
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3Claims
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Key dates
| Filing date | Feb 21, 1978 |
| Grant date | Feb 27, 1979 |
| Priority date | — |
| Expiry date | Feb 21, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/38
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method is provided for the removal of 2-chloroethanol from 1,2-dichloroethane (EDC) mixtures containing chloral comprising PA1 (1) placing the EDC/2-chloroethanol mixture at a pH of at least 10, PA1 (2) partially distilling said basic mixture to remove ethylene oxide from the resulting mixture of (1), PA1 (3) mixing the distillate with water in contact with a strong non-halogen acid catalyst to form an aqueous and organic phase, and PA1 (4) recovering the reaction product of (3) while separating and disposing the aqueous phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.