Stabilized styrene copolymers containing elastomer particles modified with a hindered amine
US5194465A · kind A · utility
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12Claims
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Key dates
| Filing date | Sep 30, 1991 |
| Grant date | Mar 16, 1993 |
| Priority date | — |
| Expiry date | Sep 30, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F285/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
ABS copolymers and similar styrene or .alpha.-methylstyrene copolymers with contain an elastomer phase are stabilized against light-induced degradation by a) incorporation of a copolymerizable sterically hindered amine in, and b) addition of a non-copolymerizable sterically hindered amine to, the copolymer. Preferred sterically hindered amines are polyalkylpiperidines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.