A lubricating oil composition for automatic transmissions

Details A lubricating oil composition for automatic transmissions A lubricating oil composition for automatic transmissions

C - Chemistry, Metallurgy

10

M

C10M 141/10 (2006.01) C10M 105/36 (2006.01) C10M 105/68 (2006.01) C10M 137/04 (2006.01)

Patent

CA 2572001

The present invention relates to a lubricating oil composition comprising a major amount of base oil of lubricating viscosity and the following additives in the following amounts based on a total amount of the lubricating oil composition: (A) 0.1 to 10 wt.% of a succinic acid ester, (B) 0.01 to 2 wt.% of a phosphorous acid ester, (C) 0.1 to 5 wt.% of an amide compound which is a reaction product obtained by reaction of a linear or branched, saturated or unsaturated monovalent aliphatic acid having 8 to 22 carbon atoms, urea, and polyalkylenepolyamine, (D) 0.01 to 2 wt.% of an overbased metal-containing detergent, and (E) 0.01 to 1 wt.% of a corrosion inhibitor.

La présente invention concerne une composition d'huile de lubrification comprenant une quantité principale d'huile de base d'une viscosité de lubrification, et les additifs suivants dans les quantités qui suivent, en fonction d'une quantité totale de composition d'huile de lubrification : A) pourcentage massique de 0,1 à 10 d'un ester d'acide succinique, B) pourcentage massique de 0,01 à 2,0 d'un ester d'acide phosphoreux, C) pourcentage massique de 0,1 à 5,0 d'un composé d'amide qui est un produit de la réaction d'un acide aliphatique monovalent saturé ou non saturé, linéaire ou ramifié, comportant de 8 à 22 atomes de carbone, d'urée, et de polyalkylénépolyamine, D) pourcentage massique de 0,01 à 2 d'un détergent surbasique contenant des métaux, et E) un pourcentage massique de 0,01 à 1 d'agent anticorrosion.

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