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US 8,138,130 B2Granted
Fused-ring aromatic amine based wear and oxidation inhibitors for lubricants
AssigneeChevron Oronite Company LLC
InventorsKenneth Dale Nelson, Edward A. Chiverton
Life of this patent
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Abstract
A multifunctional product is prepared by the reaction of an alkyl or alkenyl succinic acid derivative with a Fused-Ring Aromatic diamine, with a charge mole ratio of the diamine moiety in stoichiometric excess, under reactive conditions to thereby yield a multifunctional lubricant additive.
Claims20
A composition prepared by reacting a mixture under reactive conditions wherein the mixture consists essentially of:
- (a) an alkyl or alkenylsuccinic acid derivative, wherein the alkyl or alkenyl substituent has an average molecular weight of from 450 to 5,000, and wherein the alkyl or alkenylsuccinic acid derivative is prepared by thermally reacting maleic anhydride with a polyalkylene in the presence of a strong acid;
- and (b) a diamino naphthyl compound of the formula
- wherein R1 and R2 are independently selected from the group consisting of hydrogen and C1-10 alkyl;
- and R3 is hydrogen, hydroxyl, C1-6 alkyl or C1-6 alkoxy;
- and wherein the molar ratio of (a) to (b) is from about 1:1.5 to about 1:3.
2 more elements
A lubricating composition comprising:
- 1) an oil of lubricating viscosity;
- and 2) a multifunctional product prepared by the process of reacting a mixture under reactive conditions wherein the mixture consists essentially of:
- (a) an alkyl or alkenylsuccinic acid derivative, wherein the alkyl or alkenyl substituent has an average molecular weight of from 450 to 5,000, and wherein the alkyl or alkenylsuccinic acid derivative is prepared by thermally reacting maleic anhydride with a polyalkylene in the presence of a strong acid;
- and (b) a diamino naphthyl compound of the formula
- wherein R1 and R2 are independently selected from the group consisting of hydrogen and C1-10 alkyl;
- and R3 is hydrogen, hydroxyl, C1-6 alkyl or C1-6 alkoxy;
- and wherein the molar ratio of (a) to (b) is from about 1:1.5 to about 1:3.
4 more elements
Dependencies are inferred from the claim text.