Purification of propylene oxide
US8080678B2 · kind B2 · utility
0Cited by
18References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2010 |
| Grant date | Dec 20, 2011 |
| Priority date | — |
| Expiry date | Apr 1, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D301/32
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention is a method of purifying propylene oxide containing 25-100 ppm aldehyde impurities. The method comprises contacting the propylene oxide in the liquid phase with an amine-functionalized ion exchange resin, and recovering a purified propylene oxide product containing 10 ppm, or less, aldehydes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.