Production of diethanolamine
US6063965A · kind A · utility
2Cited by
0References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1998 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | Sep 8, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C213/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention concerns a process for preparation of alkanolamines such as diethanolamine (DEA) from ammonia and an alkylene oxide such as ethylene oxide. The yield of DEA may be increased by adding monoethanolamine (MEA) to the second feed in a split feed reactor scheme. The process can be conducted as a multistep process, such as by reacting a portion of the ethylene oxide followed by addition of a second charge of ethylene oxide after complete reaction of the first charge of ethylene oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.