C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 143/06 (2006.01) C10M 125/22 (2006.01) C10M 135/02 (2006.01) C10M 135/10 (2006.01) C10M 135/18 (2006.01) C10M 137/10 (2006.01)
Patent
CA 2549517
A method of improving the seal compatibility and/or copper corrosion performance of lubricating oil compositions for the lubrication of the crankcases of an internal combustion engine, which method includes the step of adding to the lubricating oil compositions a minor amount of a non-hydrogenated (unsaturated) olefin polymer. Also described are lubricating oil compositions for engines and transmissions, which compositions contain sulphur and/or a salicylate soap and a minor amount of a non-hydrogenated (unsaturated) polymer, which compositions are compatible with nitrile rubber engine and transmission seals and copper-containing engine and transmission components.
Alessi Michael Louis
Diggs Nancy Z.
Gutierrez Jose A.
Irving Matthew David
Scott Robin
Borden Ladner Gervais Llp
Infineum International Limited
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