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A kind of air compressor oil composition and preparation method thereof

A technology of air compressor oil and lubricating oil composition, which is applied in the field of lubricating oil, which can solve the problems of accelerating oxidation rate and shortening the service life of lubricating oil, and achieves the effect of excellent anti-wear performance and anti-oxidation performance

Active Publication Date: 2019-08-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the strong working conditions of current mechanical equipment, the oxidation rate is often accelerated and the service life of lubricating oil is shortened, so higher requirements are put forward for the efficiency and economy of antioxidants

Method used

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  • A kind of air compressor oil composition and preparation method thereof
  • A kind of air compressor oil composition and preparation method thereof
  • A kind of air compressor oil composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0041] Among the present invention, the preparation method of the compound of structure shown in formula (I) preferably comprises:

[0042] (a) react aniline, sulfur chloride and 4-chloroaniline to generate intermediate M shown in formula (II),

[0043]

[0044] (b) carrying out nucleophilic substitution reaction between the intermediate M obtained in step (a) and dimercapto-1,3,4-thiadiazole under alkaline conditions to generate the multi-effect additive shown in formula (I),

[0045]

[0046] In step (a) of the present invention, the specific mode of reacting aniline, sulfur chloride and 4-chloroaniline preferably includes:

[0047] (i) fully reacting aniline and sulfur chloride at -20-0°C in the first solvent under an inert atmosphere;

[0048] (ii) Add 4-chloroaniline into the reaction system of step (i), and react at 15-30° C. for 1-3 h.

[0049] In the present invention, the inert atmosphere can be a conventional inert atmosphere in the field, for example, it can...

Embodiment

[0078] The following examples will further illustrate the present invention, but do not limit the present invention thereby.

[0079] In the following examples and comparative examples:

[0080] The method for monitoring the complete reaction: thin-layer chromatography (TLC) fluorescence color method.

[0081] Total yield = molar amount of final product / molar amount of aniline × 100%

[0082]The physical and chemical analysis method of the product: the element content was determined by inductively coupled plasma ion emission spectrometry.

[0083] Structural characterization method: NMR method ( 1 H spectrum, 13 C carbon spectrum), high-resolution mass spectrometry.

preparation example

[0085] Fill a 500mL flask with an electromagnetic stirrer (stirring speed at 300rpm) with nitrogen protection, add 150mL of dichloromethane, then add 0.2mol of sulfur chloride, fully cool in an ice-water bath, add 0.2mol of aniline . Remove the ice-water bath after monitoring until the reaction is complete, and place it at room temperature of 25°C. After the reaction system gradually rises to 25°C, add 4-chloroaniline in 3 times for reaction. The amount added each time is the same, and 4-chloroaniline is added in total 0.15mol. After continuing the reaction for 2 hours, 30 mL of saturated brine was added to quench the reaction, and then the reaction system was transferred to a separatory funnel, washed with 50 mL of distilled water and 50 mL of saturated brine, and dried by adding 10 g of anhydrous sodium sulfate at 25 °C for 20 min. The filtered filtrate was evaporated to remove the solvent at 40° C. and 0.05 MPa to obtain intermediate M1.

[0086] In a 500mL flask with an ...

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Abstract

The invention discloses an air compressor oil composition. A lubricating oil composition contains the following components in percentage by weight: 85wt%-99wt% of base lubricating oil, 0.01wt%-10wt% of an antioxidant wear-resistant multi-effect additive, 0.01wt%-5wt% of a thio-phenol ester type antioxidant, 0.02wt%-5wt% of zinc oxide nano-particles and 0.01wt%-5wt% of a pour point depressant. The antioxidant wear-resistant multi-effect additive is a compound represented by a formula (I) (shown in the description). The invention further provides a preparation method of the air compressor oil composition. The air compressor oil composition has excellent wear resistance and oxidation resistance and can be widely applied to the field of lubricating oil of air compressors.

Description

technical field [0001] The invention relates to the field of lubricating oil, in particular to an air compressor oil composition containing a specific additive and a preparation method thereof. Background technique [0002] The lubricating oil used in the air compressor is in a high temperature and high pressure environment. Due to long-term contact with the air, the lubricating oil is easily oxidized and deteriorated. During recycling, oil products are easily oxidized and deteriorated to produce various acids, colloids, asphaltene and other substances, which will cause the viscosity and acid value of the oil to increase and the sludge generated by oxidation will increase, resulting in the operation failure of the compressor and the oil product And the temperature of the machine will rise, causing excessive wear and tear, reducing work performance, and may even cause the danger of cylinder explosion. High temperature oxidation stability is the main quality index of compress...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10M135/36C07D285/125C10N30/10C10N30/06
CPCC07D285/125C10M135/36C10M169/044C10M2201/062C10M2207/282C10M2219/084C10M2219/106C10M2229/046C10N2030/06C10N2030/10
Inventor 谢欣陈政孙洪伟段庆华
Owner CHINA PETROLEUM & CHEM CORP
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