Piperidyl esters of higher di-tri-, and polybasic aliphatic carboxylic acids as stabilizers for polymeric materials
US4069196A · kind A · utility
6Cited by
3References
16Claims
0Family size
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Key dates
| Filing date | Apr 13, 1976 |
| Grant date | Jan 17, 1978 |
| Priority date | — |
| Expiry date | Apr 13, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D211/94
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Piperidyl esters of the formula ##STR1## wherein R.sub.1 is hydrogen or lower alkyl, R.sub.2 is hydrogen, oxyl alkyl, alkenyl, alkinyl, alkoxy-alkyl, aralkyl or lower acyl and n is 2 or 3, and when n is 2, R.sub.3 is a diacyl of 36 carbons and when n is 3, R.sub.3 is a triacyl of 37 to 54 carbons. These compounds are useful as light stabilizers of polymeric materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.