Additives and lubricating oil compositions containing same

Details Additives and lubricating oil compositions containing same Additives and lubricating oil compositions containing same

C - Chemistry, Metallurgy

07

C

C07C 209/68 (2006.01) C07C 211/55 (2006.01) C09K 15/18 (2006.01) C10M 133/12 (2006.01)

Patent

CA 2690200

Para-alkylated substituted diphenylamines are made by catalytically alkylating diphenylamine with a branched-chain alkene, such as propene, oligomer mixture in which the oligomer present in the greatest percentage has 15-24 carbon atoms. The alkylated diphenylamines are useful crankcase lubricant additives such as for reducing piston deposits and engine sludge.

Des diphénylamines substituées para-alkylées sont fabriquées en alkylant de manière catalytique la diphénylamine avec un alcène à chaîne ramifiée, tel que le propène, un mélange d'oligomères dans lequel l'oligomère présent avec le pourcentage le plus élevé possède de 15 à 24 atomes de carbone. Les diphénylamines alkylées sont d'utiles additifs pour lubrifiants de carters tels que pour réduire les dépôts sur le piston et les boues de carter de moteurs.

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