High performance lubricating oils

C - Chemistry – Metallurgy – 10 – M

Patent

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Details

C10M 141/10 (2006.01) C10M 141/06 (2006.01) C10M 163/00 (2006.01) C10M 169/04 (2006.01)

Patent

CA 2339279

Lubricating oils useful as gear oils, circulating oils, compressor oils and in other applications characterized by an excellent balance of anti-wear and anti-rust characteristics are based on high quality base stocks including a major portion of a hydrocarbon base fluid such as a PAO with a secondary base stock component which is preferably a long chain alkylated aromatic, such as an alkylnaphthalene. A synergistic combination of additives comprising an adduct of a substituted triazole such as benzotriazole or a substituted benzotriazole, e.g. tolyltriazole (TTZ) with an amine phosphate and a trihydrocarbyl phosphate such as cresyl diphenylphosphate (CDP), confers the desired balance of anti-wear and anti-rust properties. In addition, the present oils typically include an anti-oxidant component and a rust inhibitor together with other optional additive components.

L'invention porte sur des huiles lubrifiantes utilisées comme huiles à engrenage, huiles de circulation, huiles de compresseurs et dans d'autres applications et qui se caractérisent par un excellent équilibre de leurs caractéristiques anti-usure et antirouille. Ces huile comprennent des fluides de base de haute qualité dont une partie principale d'un fluide de base d'hydrocarbure tel que PAO avec un composant de fluide de base secondaire qui est de préférence un agent aromatique alkylé à longue chaîne tel qu'un alkylnaphtalène. L'invention porte également sur une combinaison synergique d'additifs comprenant un produit d'addition d'un triazole substitué tel que benzotriazole ou un benzotriazole substitué tel que tolyltriazole (TTZ) avec un phosphate d'amine et un phosphate de trihydrocarbyle tel que cresyl diphénylphosphate (CDP). Cette combinaison synergique confère l'équilibre désiré des propriétés anti-usure et antirouille. De plus, ces huiles comprennent généralement un composant antioxydant et un inhibiteur de rouille, ainsi que d'autres composants additifs éventuels.

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