Process for the preparation of bis(2,2,6,6-tetramethyl-4-piperidyl)amine
US4923992A · kind A · utility
2Cited by
6References
16Claims
0Family size
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Key dates
| Filing date | Mar 27, 1989 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | Mar 27, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A one step process for the preparation of bis(2,2,6,6-tetramethyl-4-piperidyl)amine by reacting 2,2,6,6-tetramethyl-4-piperidone or 2,2,6,6-tetramethyl-4-piperidone x H.sub.2 O with ammonia and hydrogen in the presence of a hydrogenation catalyst, characterized in that the molar ratio of 2,2,6,6-tetramethyl-4-piperidone versus ammonia is between 1:0.4 and 1:0.8.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.