Process for ethanolamines
US4355181A · kind A · utility
12Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1981 |
| Grant date | Oct 19, 1982 |
| Priority date | — |
| Expiry date | Feb 27, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C215/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
In a process of making ethanolamines by reacting ethylene and ammonia and wherein ammonia is used in excess of the stoichiometric amount, the improvement comprising flashing and liquification at least part of the excess ammonia in the effluent prior to recycling. This moderates the operating conditions and simplifies the equipment needed to recycle the balance of the ammonia.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.