Amines catalysis
US5202489A · kind A · utility
3Cited by
0References
40Claims
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Assignee
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Key dates
| Filing date | Aug 8, 1989 |
| Grant date | Apr 13, 1993 |
| Priority date | — |
| Expiry date | Aug 8, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C209/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Process of making amines by inter alia the (i) intramolecular condensation of an amino compound to an amine having a lower molecular weight or (ii) the intermolecular condensation of an amino compound with one or more of another amino compound or a compound containing an alcoholic hydroxyl group using a Group IVB metal oxide condensation catalyst. The preferred process involves the manufacture of alkyleneamines, most desirably polyalkylenepolyamines, by such condensation reactions utilizing catalysts containing titanium oxide, zirconium oxide or mixtures of them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.