Copolymerizable phenolic antioxidant

Details Copolymerizable phenolic antioxidant Copolymerizable phenolic antioxidant

1977-09-01

1978-06-13

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 47CP, 260 458A, 260 4585N, 260519, 2603466, 2603467, 260 459QB, 260 4595R, 560 39, 560 44, C08K 520, C07D30789, C07D30793, C07C10142

Patent

active

040948579

ABSTRACT:
An antioxidant useful for stabilizing polyesters having the formula ##STR1## where R.sub.1 is hydrogen or a lower alkyl radical; R.sub.2 is a monovalent radical containing carbon, hydrogen, and oxygen, free of ethylenic or acetylenic unsaturation, and having a molecular weight between about 99-300 and, further, containing two carboxyl groups or their ester forming equivalents; R.sub.3 and R.sub.4 are tertiary alkyl radicals each containing not more than 8 carbon atoms; and x is an integer of from 0-4.

REFERENCES:
patent: 2207063 (1940-07-01), Liston
patent: 2324712 (1943-07-01), Lynch
patent: 3213065 (1965-10-01), Bunge et al.
patent: 3376258 (1968-04-01), Gysling et al.
patent: 3488737 (1970-01-01), Gordon
patent: 3856753 (1974-12-01), Henry et al.
patent: 3896078 (1975-07-01), Hoeschele
patent: 4051196 (1977-09-01), Wells et al.
Polymer Preprints-vol. 18, No. 1, Mar. 1977-pp. 542-546; Papers Presented at New Orleans Meeting, Div. of Polymer Chemistry Inc., American Chemical Society.

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