C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 133/54 (2006.01) C09K 15/02 (2006.01) C10M 133/00 (2006.01) C10M 141/06 (2006.01) C10M 141/08 (2006.01) C10M 159/06 (2006.01) C10M 167/00 (2006.01) F02B 75/02 (2006.01)
Patent
CA 2124307
A lubricant composition suitable for fuel injected tyro-stroke cycle engines includes an oil of lubricating viscosity, an amount, sufficient to reduce or prevent piston scuffing, of a mixture of (A) at least one phenol selected from (A-1) an aminophenol and (A-2) a reaction product of a nitrophenol and an amino compound, and (B) at least one Mannich dispersant, amine dispersant, nitrogen-containing carboxylic dispersant, or ester dispersant. The composition further includes an amount, sufficient to reduce degradation of the lubricant composition upon exposure to oxygen or oxides of nitrogen, of a nitrogen-containing inhibitor, a hindered phenol inhibitor, or a sulfur-containing organic inhibitor.
Ridout & Maybee Llp
The Lubrizol Corporation
LandOfFree
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