Piperidine-spiro-hydantoin derivatives and their use as polymer stabilizers
US4219465A · kind A · utility
3Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1979 |
| Grant date | Aug 26, 1980 |
| Priority date | — |
| Expiry date | Jun 5, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/3445
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel piperidine-spiro-hydantoin derivatives represented by the general formula (I) and use thereof as light stabilizers for synthetic polymers are described: ##STR1## The compounds are distinguished by an improved stabilizing effect in various synthetic polymer compositions, such as polyolefins, against light- and/or heat-induced deterioration thereof, small volatility upon heat-processing or during storage of shaped articles containing the compounds, and resistance to extraction with water and solvents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.