Polyolefin compositions stabilized against degradation using hydroxylamine derivatives
US4668721A · kind A · utility
48Cited by
11References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1986 |
| Grant date | May 26, 1987 |
| Priority date | — |
| Expiry date | Feb 3, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/3462
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
N,N-Dibenzylhydroxylamine and other selected hydroxylamine derivatives are effective in stabilizing polyolefin compositions containing a stabilizer or mixture of stabilizers selected from the group consisting of the phenolic antioxidants, the hindered amine light stabilizers, the ultraviolet light absorbers, the organic phosphorus compounds, the alkaline metal salts of fatty acids and the thiosynergists, against degradation upon high temperature extrusion, exposure to the combustion products of natural gas, gamma irradiation or upon storage for extended periods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.