Phosphonate stabilizers
US4144224A · kind A · utility
3Cited by
6References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1977 |
| Grant date | Mar 13, 1979 |
| Priority date | — |
| Expiry date | Nov 17, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/59
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
New amino phosphonates, containing 2,2,6,6-tetrasubstituted-piperidino moieties and processes for their manufacture are disclosed. These compounds are employed to stabilize organic materials such as polyolefins, polyamides and polyurethanes against degradation from the action of oxygen, heat and light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.