C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 133/02 (2006.01) C10M 133/12 (2006.01) C10M 133/40 (2006.01) C10M 149/12 (2006.01) C10M 161/00 (2006.01)
Patent
CA 2356083
A composition is disclosed that comprises lubricating oil and at least a first antioxidant and a second antioxidant, the first antioxidant being a secondary diarylamine and the second antioxidant being a 2,2,4-trialkyl-1,2- dihydroquinoline or a polymer thereof. Also disclosed is a method of increasing the oxidation stability of a lubricating oil comprising adding thereto at least a first antioxidant and a second antioxidant, the first antioxidant being a secondary diarylamine and the second antioxidant being a 2,2,4-trialkyl-1,2-dihydroquinoline or a polymer thereof.
L'invention concerne une composition qui comprend une huile lubrifiante et au moins un premier antioxydant et un deuxième antioxydant. Le premier antioxydant est une diarylamine secondaire et le deuxième antioxydant est un 2,2,4-trialkyl-1,2-dihydroquinoline ou un polymère de celui-ci. En outre, l'invention traite d'un procédé consistant à augmenter la stabilité d'oxydation d'une huile lubrifiante consistant à ajouter à cette dernière au moins un premier antioxydant et un deuxième antioxydant. Ce premier antioxydant est une diarylamine secondaire et le deuxième antioxydant est un 2,2,4-trialkyl-1,2-dihydroquinoline ou un polymère de celui-ci.
Abbott Ronald D.
Migdal Cyril A.
Gowling Lafleur Henderson Llp
Uniroyal Chemical Company Inc.
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