Process for recovering ethyleneamines from aqueous solution of ethyleneamine carbonates
US4650906A · kind A · utility
9Cited by
1References
17Claims
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Key dates
| Filing date | Feb 29, 1984 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Feb 29, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C209/86
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Ethyleneamines are recovered from an aqueous solution of carbonates of ethyleneamines by distilling an aqueous solution of carbonates of ethyleneamines including ethylenediamine, in which the molar ratio of the carbon dioxide component to the ethyleneamines including ethylenediamine is 0.01 to 0.5, whereby ethylenediamine is distilled out together with water. The aqueous solution to be distilled is advantageously prepared by heating an aqueous solution of carbonates of ethyleneamines including ethylenediamine to effect decarboxylation.
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