Stabilization of unsaturated carboxylic acid esters with mixture

Details Stabilization of unsaturated carboxylic acid esters with mixture Stabilization of unsaturated carboxylic acid esters with mixture

1975-12-29

1977-09-27

Schafer, Richard E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

260239B, C09K 1516

Patent

active

040510670

ABSTRACT:
A method of inhibiting polymerization of unsaturated carboxylic acid esters and improved unsaturated carboxylic acid ester compositions are described. The method comprises, and the compositions are prepared by, incorporating into the ester composition a combination comprising polyalkyleneamine and arylenediamine of the formula ##STR1## in which X is hydrogen, chloro, trichloromethyl, trifluoromethyl, nitro, lower alkyl, lower alkoxy or phenoxy, R is hydrogen or alkyl, and R.sub.1 is alkyl or phenyl or R and R.sub.1 together with the nitrogen atom is a heterocycle selected from the group consisting of pyrrolidinyl, 2,5-dimethyl pyrrolidinyl, piperidino and hexahydro-1H-azepin-1-yl.

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patent: 3896162 (1975-07-01), Mullins
Condensed Chemical Dictionary, (8th Ed.), New York: Van Nostrand Reinhold Co., 1971, 469.

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