Polyester/polyether segmented copolymers stabilized against degradation by UV light via copolymerization with analogs of 2,2,6,6-tetramethylpiperidine derivatives
US4322522A · kind A · utility
15Cited by
31References
7Claims
0Family size
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Key dates
| Filing date | Jul 8, 1980 |
| Grant date | Mar 30, 1982 |
| Priority date | — |
| Expiry date | Jul 8, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/3445
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyester/polyether segmented copolymers are stabilized against degradation by UV light via copolymerization with novel diesters and/or bis-hydroxyalkyl terminated derivatives of 2,2,6,6-tetramethylpiperidines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.