Polymeric substrates stabilized with N-substituted hindered amines
US5004770A · kind A · utility
90Cited by
5References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1989 |
| Grant date | Apr 2, 1991 |
| Priority date | — |
| Expiry date | Oct 3, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/3435
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Hindered amines based on various 2,2,6,6-tetralkylated nitrogen-containing heterocyclic moieties wherein the hindered nitrogen atom on the ring is substituted with OH or OR substituents and the 4-position of the ring is substituted with a diversity of substituents are effective in protecting a variety of non-polyolefin substrates against the adverse effects of light, heat and oxygen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.