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US 4,195,015 AGranted
Heat and aging stable copolyetheresteramides and method of manufacturing same
AssigneeAto Chimie
InventorsGerard Deleens, Bernard Guerin, Claude Poulain
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Abstract
Copolyetheresteramide based compositions which are stable with respect to the effects of heat, light and oxygen are disclosed. From about 0.05 to about 5% of 4-4'-bis-(.alpha.-.alpha.'-dimethylbenzyl)-diphenylamide either alone or in combination with 0.01 to 2% of cuprous iodide and potassium iodide such that the ratio of CuI to KI is between 0.1 and 1.9 is added to the copolyetheresteramide to form a stable composition.
Claims8
A thermoplastic aliphatic copolyetheresteramide based composition of high molecular weight stabilized to light, heat and oxidation comprising:
- a copolyetheresteramide and 4-4'-bis-(.alpha.-.alpha.'-dimethylbenzyl)-diphenylamine in an amount of between about 0.05 and about 5% by weight of the copolyetheresteramide and between about 0.01 and about 2% by weight of a mixture of cuprous iodide and potassium iodide, the ratio by weight of said cuprous iodide to said potassium iodide being equal to between 0.1:1 and 1.9:1.
Dependencies are inferred from the claim text.