Process for the safe and environmentally sound production of highly pure alkylene oxide adducts
US5159092A · kind A · utility
12Cited by
1References
13Claims
0Family size
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Key dates
| Filing date | Sep 12, 1990 |
| Grant date | Oct 27, 1992 |
| Priority date | — |
| Expiry date | Sep 12, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/0011
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An alkylene oxide is reacted in a loop reactor with an organic compound having a reactive hydrogen atom, a gas circulation and a liquid circulation around the reactor being provided and being coupled with one another via an ejector mixing nozzle. To ensure completeness of the reaction and suppression of the formation of by-products such as dioxane, it is essential to reduce the temperature of the entire alkylene oxide gas phase to a temperature below that of the liquid phase, and this is effected by feeding and evaporating liquid alkylene oxide and by cooling of the gas phase on the unit walls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.