Catalytic antioxidants

C - Chemistry – Metallurgy – 10 – M

Patent

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Details

C10M 159/18 (2006.01) C10M 169/04 (2006.01)

Patent

CA 2663691

The present invention is directed to lubricating oils exhibiting improved resistance to oxidation and deposit/sludge formation comprising a lubricant base oil and an effective amount of a catalytic antioxidant comprising one or more polymetal organometallic compound, to a method for improving the antioxidancy and the resistance to deposit/sludge formation of formulated lubricating oil compositions by the addition thereto of an effective amount of the aforementioned polymetal organometallic compound, and to an additive concentrate containing the aforementioned polymetal organometallic compound.

La présente invention concerne des huiles lubrifiantes présentant une plus grande résistance à l'oxydation et à la formation de dépôts/boues et comprenant une huile de base lubrifiante et une quantité efficace d'un antioxydant catalytique comprenant un ou plusieurs composés organométalliques polymétalliques. Cette invention concerne également un procédé visant à améliorer le pouvoir antioxydant et la résistance à la formation de dépôts/boues de compositions d'huiles lubrifiantes formulées en leur ajoutant une quantité efficace du composé organométallique polymétallique susmentionné et concerne en outre un concentré d'additifs contenant le composé organométallique polymétallique susmentionné.

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