Hydrogen peroxide oxidation of 4-hydroxy-2, 2, 6, 6-tetramethylpiperidine
US5654434A · kind A · utility
5Cited by
3References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 9, 1995 |
| Grant date | Aug 5, 1997 |
| Priority date | — |
| Expiry date | Nov 9, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D211/94
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An environmentally friendly process is described for the preparation of 4-hydroxy-2,2,6,6-tetramethylpiperidine-N-oxyl by the direct hydrogen peroxide oxidation of 4-hydroxy-2,2,6,6-tetramethylpiperidine in the absence of any catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.