Lubricant additive formulation containing multifunctional...

C - Chemistry – Metallurgy – 10 – M

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C10M 169/04 (2006.01)

Patent

CA 2597726

The present invention provides a lubricating composition comprising (a) an oil of lubricating viscosity; (b) a friction modifier; (c) a corrosion inhibitor; (d) an antiwear agent; and (e) a product prepared by heating together: (i) a dispersant; (ii) 2,5-dimercapto-1,3,4-thiadiazole or a hydrocarbyl-substituted 2,5-dimercapto-1,3,4-thiadiazole, or oligomers thereof; (iii) a borating agent;and (iv) optionally a dicarboxylic acid of an aromatic compound selected from the group consisting of 1,3 diacids and 1,4 diacids, or (v) optionally a phosphorus acid compound, said heating being sufficient to provide a product of (i), (ii), (iii) and optionally (iv), which is soluble in an oil of lubricating viscosity. The invention further provides a use for the lubricating composition in a transmission.

La présente invention concerne une composition lubrifiante comprenant (a) une huile à viscosité lubrifiante; (b) un agent de modification de frottement; (c) un inhibiteur de corrosion; (d) un agent anti-usure; et (e) un produit obtenu par chauffage des éléments précités: (i) un agent dispersant; (ii) 2,5-dimercapto-1,3,4-thiadiazole ou un 2,5-dimercapto-1,3,4-thiadiazole à substitution hydrocarbyle, ou leurs oligomères, (iii) un agent de boration; et (iv) éventuellement un dicarboxylique d'un composé aromatique sélectionné dans le groupe constitué de 1,3 diacides 1,4 diacides ou (v) éventuellement un composé d'acide phosphoré, lequel chauffage étant suffisant pour obtenir un produit de (i), (ii), (iii) et éventuellement (iv), qui est soluble dans une huile à viscosité lubrifiante. Egalement utilisation de la composition lubrifiante dans des éléments de transmission.

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