Polymers containing polyalkylpiperidines and use thereof as stabilizers
US4265803A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1978 |
| Grant date | May 5, 1981 |
| Priority date | — |
| Expiry date | Aug 7, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L23/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention entitled "Polymers containing polyalkylpiperidines and use thereof as stabilizers" provides a class of polymers in which groups containing sterically hindered polyalkylpiperidines are linked in the main chain of the polymers via bridging members containing 2-hydroxy-1,3-trimethylene groups. The polymers show superior stabilizing effects for various synthetic polymers such as polyolefins against degradation thereof induced by light and/or heat. The polymers have advantages, as compared with known stabilizer compounds, that they hardly volatile upon processing with heating or during storage of articles containing thereof, and that they are resistant to extraction with solvents from articles containing thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.