Ultraviolet resistant glutarimide
US5324456A · kind A · utility
1Cited by
4References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1992 |
| Grant date | Jun 28, 1994 |
| Priority date | — |
| Expiry date | Jun 29, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/3492
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymers of (N-lower alkyl)dimethylglytarimide or (N-hydrogen)-dimethylglutarimide are resistant to molecular weight degradation and yellowing on exposure to heat and ultraviolet or visible light by inclusion of a hindered piperazinone stabilizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.