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Oil-soluble antirust additive as well as preparation method and method of use thereof

An anti-rust additive, oil-soluble technology, applied in the field of anti-rust additives, can solve the problems of limited application, poor oil solubility, etc., and achieve the effect of increasing pH value, reducing acidity, and good oxidation stability

Inactive Publication Date: 2008-07-30
大连广会科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, dodecenylsuccinic acid has strong polarity and poor oil solubility, which limits its application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Sample number: T-747A-1

[0015] Add dodecenylsuccinic acid and ethylene glycol with a molar ratio of 5.4:1 into the kettle for esterification reaction, control the reaction pressure below -0.1Mpa, control the reaction temperature at 135°C ± 5°C, and react for 4 hours . The structural formula of the compound is CH 2 =C(C 10 h 21 )CH(COOH)CH 2 COOCH 2 CH 2 Oh.

[0016] Its physical properties are: flash point (opening): ≥90°C; acid value KOHmg / g: 160-200; PH value ≥4.4

Embodiment 2

[0018] Sample number: T-747A-2

[0019] Add dodecenylsuccinic acid and diethylene glycol with a molar ratio of 2.6:1 into the kettle for esterification reaction, the reaction pressure is controlled below -0.1Mpa, the reaction temperature is controlled at 145°C ± 5°C, and the reaction is 4.8 Hour. Obtaining compound structural formula is:

[0020] CH 2 =C(C 10 h 21 )CH(COOH)CH 2 COOCH 2 CH 2 OCH 2 CH 2 Oh.

[0021] Its physical properties are: flash point (opening): ≥90°C; acid value KOHmg / g: 160-200; PH value ≥4.4

Embodiment 3

[0023] Sample number: T-747A-2

[0024] Add dodecenylsuccinic acid and diethylene glycol with a molar ratio of 3.2:1 into the kettle for esterification reaction. The reaction pressure is controlled below -0.1Mpa, and the reaction temperature is controlled at 140°C ± 5°C. Reaction 3.1 Hour. Obtaining compound structural formula is:

[0025] CH 2 =C(C 10 h 21 )CH(COOH)CH 2 COOCH 2 CH 2 OCH 2 CH 2 Oh.

[0026] Its physical properties are: flash point (opening): ≥90°C; acid value KOHmg / g: 160-200; PH value ≥4.4

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Abstract

The invention relates to an oil-soluble rust-inhibiting additive, and the preparing method as well as the use method thereof. In the preparing method, twelve-alkene-butyl diacid DDSA and polylol are adopted as raw materials and decompressed at a temperature of 130 to 150 DEG C. The corresponding rust-inhibiting additive is obtained through the synthesis of one-step esterification reaction. The use method of the oil-soluble rust-inhibiting additive is that the weight percentage of the quantity added to common rust-inhibiting grease is 0.03 to 0.05 percent. The rust-inhibiting additive of the invention can prolong the antioxygen life of petroleum products, has stable performance and high temperature resistance, is hard to be dissolved out at a low temperature and has excellent fluidity. The rust-inhibiting additive is a rust-inhibiting additive with excellent performance, which is applicable to rust-inhibiting oils of various types such as the steam-turbine oil, the hydraulic oil, the main shaft oil and so on.

Description

technical field [0001] The invention relates to an oil-soluble anti-rust additive in the field of anti-corrosion, a preparation method and a use method, in particular to an anti-rust additive which is easily soluble in oil, resistant to high temperature, difficult to precipitate at low temperature, and stable in performance. Background technique [0002] In order to prevent corrosion of metal products, antirust grease is widely used in various fields. Anti-rust grease is mainly made by adding various additives to oil products. According to the theory of polar adsorption and film formation, antirust additives mainly act on the metal surface to isolate moisture and air, thereby inhibiting corrosion. The stronger the polarity of the anti-rust additive, the stronger its adsorption on the metal surface, and the better the anti-rust performance. However, the more polar the anti-rust additive is, the poorer its oil solubility is. [0003] Dodecenylsuccinic acid in the "Manufactu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/10
Inventor 梁辉王力军于巧云赵广龙郑雁穆健张伟梁德军
Owner 大连广会科技有限公司
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