Process for purifying propylene oxide
US6736941B2 · kind B2 · utility
83Cited by
11References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2002 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Oct 24, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D301/32
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is described for purifying propylene oxide, which includes the step of distilling propylene oxide containing impurities in the presence of a hydrocarbon having 5 carbon atoms or less. According to the present invention, a process is provided for purifying propylene oxide which has a feature that impurities contained in a solution containing propylene oxide to be purified can be efficiently removed. Oxygen-containing impurities, in particular, can be very efficiently removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.