Propylene oxide purification and recovery
US7105687B1 · kind B1 · utility
4Cited by
11References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 22, 2005 |
| Grant date | Sep 12, 2006 |
| Priority date | — |
| Expiry date | Dec 22, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D301/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
In accordance with the invention, propylene oxide is formed by reaction of propylene and hydrogen peroxide or by reaction of propylene, oxygen and hydrogen in methanol solvent, methanol and methyl formate are separated from propylene oxide by extractive distillation wherein the aqueous bottoms from methanol recovery distillation is used as extractive distillation solvent after first having been neutralized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.