Synthetic polymer stabilizers
US4118368A · kind A · utility
7Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1976 |
| Grant date | Oct 3, 1978 |
| Priority date | — |
| Expiry date | Nov 5, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/59
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel derivatives of 4-amino-2,6-dimethylpiperidine have additional methyl or substituted-methyl substituents at positions 2 and 6, and a carboxylate ester substituent at position 4. Positions 1 and 3, and the amino group at position 4, can optionally also be substituted. These derivatives are useful for stabilizing synthetic polymers, especially polyolefins, polyamides and polyurethanes, against photo- and thermal-deterioration, generally in an amount of 0.01 - 5.0% by weight based on the polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.