Preparation of polyalkylene polyamines from ammonia, alkyleneamine, and alkanolamine
US4394524A · kind A · utility
28Cited by
9References
22Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 31, 1981 |
| Grant date | Jul 19, 1983 |
| Priority date | — |
| Expiry date | Aug 31, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing noncyclic polyalkylene polyamine compounds is disclosed wherein ammonia, an alkylene polyamine compound and an alkanolamine compound are reacted in the presence of an effective amount of a phosphorus-containing substance or a salt of a sulfur-containing substance or its corresponding acid at a temperature from about 200.degree. to 350.degree. C. under a pressure sufficient to maintain the reaction mixture essentially in liquid phase. The polyalkylene polyamines thus formed are recovered from the reaction mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.