Antioxidant of n‑(4‑anilinophenyl)‑amidosulfide compounds

An anilino phenyl compound technology is applied in the field of anti-oxidant additives for lubricating oil, which can solve the problems of oxidative failure of ester lubricating oil, affecting the safe use of equipment, etc., so as to improve the initial oxidation temperature, improve service performance, and reduce oxidative deterioration. the effect of risk

Active Publication Date: 2017-06-30
梧州科润润滑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Under high temperature conditions, ester lubricating oil is prone to oxidation failure, which affects the safe use of equipment

Method used

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  • Antioxidant of n‑(4‑anilinophenyl)‑amidosulfide compounds
  • Antioxidant of n‑(4‑anilinophenyl)‑amidosulfide compounds
  • Antioxidant of n‑(4‑anilinophenyl)‑amidosulfide compounds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Synthetic N-(4-anilinophenyl)-amido-methylene dodecyl sulfide (such as figure 2 ), as a lubricating oil antioxidant additive, dissolved in the lubricating oil base oil trimethylolpropane oleate with a concentration of 1%, and using differential scanning calorimetry (DSC) to detect this base oil and the antioxidant According to the initial oxidation temperature and oxidation induction period of the base oil of the agent, the high temperature oxidation resistance of the antioxidant can be judged according to the initial oxidation temperature, and the stability of the antioxidant can be judged according to the length of the oxidation induction period.

[0038] The DSC-Q10 differential scanning calorimeter was used for testing. Dynamic DSC test conditions: nitrogen flow rate 30mL / min, oxygen flow rate 20mL / min, heating rate 20°C / min, record data at 100-400°C. Nitrogen is introduced at the beginning of the test, and when the temperature reaches the set temperature of 100°C,...

Embodiment 2

[0042] Synthetic N-(4-anilinophenyl)-amido-methylene nonyl sulfide (such as Figure 4 ), as a lubricating oil antioxidant additive, dissolved in the lubricating base oil trimethylolpropane oleate with its 1% concentration, and utilizes dynamic DSC to measure the initial oxidation temperature in the specific lubricating base oil wherein. Test apparatus and test condition are consistent with embodiment 1. The test results of dynamic DSC are as follows Figure 5, the results show that after the addition of N-(4-anilinophenyl)-amido-methylenenonyl sulfide, the initial oxidation temperature of the lubricating oil is 272.86°C, which effectively improves the oxidation resistance of the lubricating oil Performance (Under the same test conditions, the initial oxidation temperature of the lubricating base oil trimethylolpropane oleate is 233.65°C).

[0043] Static DSC was used to measure the oxidation induction time of lubricating oil containing 1% N-(4-anilinophenyl)-amido-methylenen...

Embodiment 3

[0045] Figure 6 It is the dynamic DSC curve of lubricating base oil trimellitate and lubricating oil containing 1% N-(4-anilinophenyl)-amido-methylene nonyl sulfide. Test apparatus and test condition are consistent with embodiment 1,2. Dynamic DSC test results show that: the initial oxidation temperature of trimellitate is 243.61 ° C, after adding 1% concentration of N-(4-anilinophenyl)-amido-methylene nonyl sulfide, the lubricating The initial oxidation temperature of the oil is 285.27°C, which effectively improves the oxidation resistance of the lubricating oil.

[0046] Determination of lubricating oil containing lubricating base oil trimellitate and 1% N-(4-anilinophenyl)-amido-methylene nonyl sulfide + trimellitate at 230°C by static DSC Oxidation induction time at constant temperature. Static DSC oxidation reaction test conditions: nitrogen flow rate 30mL / min, heating rate 20°C / min, when the temperature rises to 230°C, switch to oxygen, oxygen flow rate 20°C / min, kee...

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Abstract

The invention discloses anti-oxygen of an N-(4-anilino phenyl)-acylamino sulfoether compound. The anti-oxygen is characterized in that according to the requirement of ester oil applied under the wide temperature range condition (120 DEG C-230 DEG C), a N-(4-anilino phenyl)-acylamino sulfoether compound serves as efficient / multi-effect lubricating oil anti-oxygen, and the oxidation resistance of lubricating oil is improved. The structure of the type of compound is the N-(4-anilino phenyl)-acylamino sulfoether compound shown in the graph 1, R1 and R2 are selected from alkyl, and R3 and R4 are selected from hydrogen or alkyl. The service performance of the lubricating oil can be improved through the compound.

Description

technical field [0001] The invention relates to lubricating oil antioxidant additives, in particular to N-(4-anilinophenyl)-amide sulfide compounds as high-efficiency / multi-effect lubricating oil antioxidants, which can improve the performance of lubricating oil under wide temperature range conditions. Antioxidant properties. Background technique [0002] Under high temperature conditions, ester lubricating oil is prone to oxidation failure, which affects the safe use of equipment. In order to improve the antioxidant capacity of lubricating oil, it is very important to synthesize and apply a class of high-efficiency / multi-effect antioxidants. In view of the general law of high-temperature oxidation behavior of ester oils, antioxidants can capture free radicals generated during the oxidation of ester lubricating oils and promote the termination of the chain reaction of free radical reactions, so the molecular structure of antioxidants can be designed to have The group with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C323/22C10M135/22C10M169/04C10N30/10
Inventor 高新蕾王越
Owner 梧州科润润滑科技有限公司
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