Stabilized copolyetheresters

Details Stabilized copolyetheresters Stabilized copolyetheresters

1978-02-16

1980-01-22

Taylor, Hosea E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 458NT, 260 459NC, 260 4595R, 528274, 528301, C08K 513, C08K 534

Patent

active

041850033

ABSTRACT:
Thermoplastic copolyetherester elastomers are stabilized against heat and light aging by incorporating into the copolyetherester effective concentrations of a phenolic antioxidant and a hindered amine photostabilizer of the formula ##STR1## where R.sub.1 is hydrogen or an alkyl radical of 1-12 carbon atoms, R.sub.2 and R.sub.3 are alkyl radicals of 1-12 carbon atoms, benzyl, or 3,5-di-tert-butyl-4-hydroxybenzyl.

REFERENCES:
patent: 3493633 (1970-02-01), Lange
patent: 3584047 (1971-06-01), Dexter et al.
patent: 3640928 (1972-02-01), Murayama et al.
patent: 3660438 (1972-05-01), Dexter
patent: 3763109 (1973-10-01), Witsiepe
patent: 3850877 (1974-11-01), Cook
patent: 3860558 (1975-01-01), Klemchuk
patent: 3896078 (1975-07-01), Hoeschele
patent: 3993655 (1976-11-01), Rasberger et al.
patent: 4051196 (1977-09-01), Wells et al.

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