Stabilized copolyetheresters

Details Stabilized copolyetheresters Stabilized copolyetheresters

C - Chemistry, Metallurgy

08

K

400/3017

C08K 5/34 (2006.01) C08K 5/3435 (2006.01) C08L 67/00 (2006.01) C08L 71/02 (2006.01)

Patent

CA 1114980

ABSTRACT OF THE DISCLOSURE Thermoplastic copolyetherester elastomers are stabilized against heat and light aging by incorpor- ating into the copolyetherester effective concentra- tions of a phenolic antioxidant and a hindered amine photostabilizer of the formula Image where R1 is hydrogen or an alkyl radical of 1-12 carbon atoms, R2 and R3 are alkyl radicals of 1-12 carbon atoms, benzyl, or 3,5-di-tert-butyl-4-hydroxybenzyl.

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