Process for the preparation of stabilized styrene copolymers containing elastomer particles
US5288777A · kind A · utility
1Cited by
10References
3Claims
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Key dates
| Filing date | Nov 9, 1992 |
| Grant date | Feb 22, 1994 |
| Priority date | — |
| Expiry date | Nov 9, 2012 |
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 which 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.