Process for the purification of 1,2-dichloroethane
US4087474A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1977 |
| Grant date | May 2, 1978 |
| Priority date | — |
| Expiry date | Jun 6, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/38
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for the disposal of 2-chloroethanol by conversion to readily biodegradable ethylene glycol comprising; PA1 (1) extracting 2-chloroethanol into a neutral or acidic aqueous solution; PA1 (2) adjusting the pH of the solution to at least 10 and heating to a temperature of from about 25.degree. C to about 100.degree. C to form ethylene oxide and ethylene glycol, PA1 (3) stripping the basic solution of (2) to obtain a basic aqueous phase and a distillate, the basic aqueous phase being disposed, and PA1 (4) condensing and hydrolyzing the distillate and PA1 (5) stripping said hydrolysate, recovering the volatile organic portion, and PA1 (6) disposing of ethylene glycol in aqueous solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.