Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1992-11-09
1994-02-22
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524 87, 525 73, 525203, 525279, C08K 53432, C08K 53415, C08G 6391, C08L 3904
Patent
active
052887774
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.
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Clauss Margot
Gilg Bernard
Rytz Gerhard
Stauffer Werner
Ciba-Geigy Corporation
Hall Luther A. R.
Michl Paul R.
Yoon Tae H.
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