Alkylation of diphenylamine with polyisobutylene oligomers

Details Alkylation of diphenylamine with polyisobutylene oligomers Alkylation of diphenylamine with polyisobutylene oligomers

C - Chemistry, Metallurgy

07

C

C07C 211/55 (2006.01) C07C 209/68 (2006.01)

Patent

CA 2399479

A process for preparation of alkylated diphenylamine antioxidant which comprises alkylating diphenylamine with a polyisobutylene in the presence of a clay catalyst, wherein the polyisobutylene has an average molecular weight in the range of 120 to 600 and wherein the polysibutylene contains at least 25% methylvinylidene isomer.

Procédé pour la préparation d'un antioxydant à base de diphénylamine alkylée, faisant appel à l'alkylation de la diphénylamine avec un polyisobutylène en présence d'un catalyseur (argile), où le polyisobutylène possède une masse moléculaire moyenne de l'ordre de 120 à 600 et où le polyisobutylène est composé à au moins 25 % de l'isomère méthylvinylidène.

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