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Antioxidant composition of lubricating oil

An antioxidant and composition technology, applied in lubricating compositions, additives, petroleum industry and other directions, can solve the problem of no organic cerium compound synergistic antioxidant, and achieve outstanding antioxidant effect, excellent anti-rust performance and wear reduction. performance effect

Active Publication Date: 2014-11-12
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the synergistic anti-oxidation of organic cerium compounds and other additives

Method used

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  • Antioxidant composition of lubricating oil
  • Antioxidant composition of lubricating oil
  • Antioxidant composition of lubricating oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The weight ratio of the organic cerium compound to the aromatic amine compound is 1:0.02.

[0035] The organic cerium compound is cerium octylbenzenesulfonate, the weight content of cerium in the compound is 7.0%, and the valence is +3.

[0036] The aromatic amine compound is N-octylphenyl-naphthylamine.

[0037] The content of antioxidant in base oil is 0.05%.

Embodiment 2

[0039] The weight ratio of the organic cerium compound to the aromatic amine compound is 1:0.1.

[0040] The organic cerium compound is cerium decanylbenzenesulfonate, the weight content of cerium in the compound is 5.3%, and the valence is +3.

[0041] The aromatic amine compound is N-methyl-aniline.

[0042] The content of antioxidant in base oil is 0.1%.

Embodiment 3

[0044] The weight ratio of the organic cerium compound to the aromatic amine compound is 1:0.5.

[0045] The organic cerium compound is cerium dodecylbenzenesulfonate, the weight content of cerium in the compound is 4.3%, and the valence is +4.

[0046] The aromatic amine compound is N-butyl-aniline.

[0047] The content of antioxidant in base oil is 0.5%.

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Abstract

The invention relates to an antioxidant composition of lubricating oil, which is composed of organic cerium compound and aromatic amine compound at the weight ratio of 1:0.02-10. The antioxidant composed of the organic cerium compound and the aromatic amine compound has excellent anti-oxidation effects, and meanwhile endows the lubricating oil with excellent antirust and antifriction performance. The antioxidant can be not only directly used in oil products including internal combustion engine oil, industrial oil and greases, but also compatible with other additives of the lubricating oil, thereby satisfying performance requirements of the different lubricating oils.

Description

technical field [0001] The invention relates to a lubricating oil additive, in particular to a lubricating oil antioxidant composition containing an organic cerium compound and an aromatic amine compound. Background technique [0002] The oxidation of lubricating oil is a chemical process initiated by oxygen and heat and catalyzed by transition metals such as copper, iron, and nickel. The cylinder of an automobile engine just provides the necessary external conditions for the oxidation reaction of lubricating oil, which can be regarded as a lubricating oil Oxidation reactor, therefore, requires engine oil to have good oxidation resistance, and with the development of engine technology, the performance requirements of lubricating oil are becoming increasingly stringent, and even higher requirements are put forward for lubricating oil antioxidants. In many cases, relying on a single antioxidant alone is difficult to meet the performance requirements of lubricating oils. It is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M141/08C10M141/06C10N30/10C10N30/06C10N30/12
Inventor 连玉双张东恒关婷婷王栋于军
Owner PETROCHINA CO LTD
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