UV-stabilization of polymers using nitro compounds
US5122555A · kind A · utility
2Cited by
16References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1990 |
| Grant date | Jun 16, 1992 |
| Priority date | — |
| Expiry date | Aug 2, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/32
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyolefins are stabilized against UV-deterioration by mixing therewith a hindered C-nitro compound having a molecular weight above 500. In a preferred embodiment the hindered C-nitro compound is a nitrated polyolefin. A conventional UV-stabilizer, such as a substituted benzophenone or a hindered piperidine, may be used in combination with the hindered C-nitro compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.