Extractive distillation of propylene oxide using propanol
US5620568A · kind A · utility
4Cited by
12References
2Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 3, 1996 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Jun 3, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D301/32
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An extractive distillation agent of 1-propanol is fed to an extractive distillation column used for the distillation of propylene oxide contaminated with water, acetone and methanol to obtain an overhead distillate fraction of essentially anhydrous propylene oxide contaminated with reduced quantities of acetone and methanol, and a heavier bottoms distillation fraction containing substantially all of the 1-propanol, water and acetone, some of the methanol and heavier by-products of propylene oxide formed in the distillation column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.