FIELD: chemistry.
SUBSTANCE: invention relates to method of obtaining N-2-ethylhexyl-N'-phenyl-п-phenylenediamine, which is used as antioxidant for polymers by alkylation of n-aminodiphenylamine with aliphatic alcohols at temperature 170-235°C in presence of potassium hydroxide with distillation of alcohol azeotrope with water through refluxer, in which s temperature 90-110°C is supported, by return of condensed hot alcohol in reaction zone, by separating of target product from organic layer after water extraction of reaction mass.
EFFECT: increasing of product quality by reduction of alkylation time.
3 cl, 4 ex, 1 tbl
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