Polyalkylene polyamines from alkanolamine and ammonia or amines using group IIIB metal acid phosphate catalysts
US4578517A · kind A · utility
37Cited by
13References
42Claims
0Family size
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Key dates
| Filing date | Sep 16, 1983 |
| Grant date | Mar 25, 1986 |
| Priority date | — |
| Expiry date | Sep 16, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D295/023
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing polyalkylene polyamine compounds is disclosed wherein ammonia or a primary or secondary amine and an alkanolamine compound are reacted in the presence of an effective amount of a Group IIIB metal acid phosphate at a temperature from about 175.degree. to 400.degree. C. under a pressure sufficient to maintain a substantial amount of the ammonia or amine in the reaction zone. The polyalkylene polyamines thus formed are recovered from the reaction mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.