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Extreme pressure antiwear additive and preparation method and application thereof

A technology of extreme pressure antiwear agent and acid binding agent, applied in chemical instruments and methods, additives, petroleum industry, etc. The problem of low strength and high activity of di-n-butyl phosphite can achieve the effect of good oil solubility, excellent anti-wear performance, thermal oxidation stability and good thermal oxidation stability.

Inactive Publication Date: 2012-06-20
天津市金岛润滑科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the widely used ashless anti-wear additives of lubricating oil (grease) mainly include di-n-butyl phosphite (T304), tricresyl phosphate (T306), sulfuric acid-formaldehyde-amine condensate (T305), sulfuric acid Double ester amine salt (T307), phosphate ester amine salt (T308B), etc., there are not many varieties, and each has its own advantages and disadvantages. For example, di-n-butyl phosphite has too high activity and serious corrosion during use; tricresyl phosphate oil film strength Not high; thiophosphoric acid-formaldehyde-amine condensate, thiophosphoric acid double ester amine salt has a very bad smell; phosphate amine salt has poor extreme pressure anti-wear performance and thermal stability, etc.

Method used

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  • Extreme pressure antiwear additive and preparation method and application thereof
  • Extreme pressure antiwear additive and preparation method and application thereof
  • Extreme pressure antiwear additive and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] The preparation method of n-octyloxy (dodecyltriazole) phosphate derivative is as follows:

[0043] Take 0.3 mol of phosphorus oxychloride and 200 ml of toluene, add 0.3 mol of n-octanol and 0.6 mol of tetrabutylammonium bromide with stirring at a temperature of 0~10℃, stir at 40℃~50℃ for 2h, and collect 250Pa by vacuum distillation The liquid with the lower distillation range in the range of 110-115°C is the intermediate of di-n-octyloxy phosphate. Add dodecylamine and tetrabutylammonium bromide successively to the phosphate and 200ml ethylbenzene at a temperature of 5℃~15℃, react at 10℃~15℃ for 2h, and react at 50℃~60℃ 3h, then add benzotriazole powder and react at 115℃~135℃ for 2h. Nitrogen protection is required during the entire reaction and distillation process. After the reaction is completed, it is filtered, washed, dried and purified, and the obtained yellow transparent liquid is an anti-wear additive n-octyloxy (dodecyltriazole) phosphate derivative, and the co...

Embodiment 2

[0045] The preparation method of n-butoxy (cyclohexylaminomethylbenzenetriazole) phosphate derivative is as follows:

[0046] Take 0.3 mol of phosphorus oxychloride, 250 ml of ether, add 0.6 mol of n-butanol and 0.4 mol of sodium hydroxide with stirring at 5~15℃, stir at 50℃~60℃ for 2h, collect under reduced pressure and distill at 250Pa, the distillation range is 100- The liquid within the range of 110°C is the di-n-butoxy phosphate intermediate. At 10℃~20℃, add cyclohexylamine and sodium hydroxide to the phosphate and 200ml ethylbenzene successively, react at 15℃~30℃ for 2h, react at 50℃~60℃ for 3h, then add The tolyltriazole powder was reacted at 120℃~135℃ for 4h. Nitrogen protection is required during the entire reaction and distillation process. After the reaction is completed, after filtering, washing, drying and purifying, the obtained yellow transparent liquid is an anti-wear additive n-butoxy (cyclohexylamine methyl benzene triazole) phosphate derivative, and the code ...

Embodiment 3

[0048] Isooctyloxy (tridecyl tertiary carbon primary benzotriazole) phosphate derivative, the preparation method is as follows:

[0049] Take 0.3 mol of phosphorus oxychloride and 200 ml of toluene, add 0.3 mol of isooctyl alcohol and 0.6 mol of triethylamine with stirring at a temperature of 10 to 20 ℃, stir at 50 ℃ to 60 ℃ for 3 hours, and collect under reduced pressure distillation at 250 Pa. The liquid within the range of 110-120°C is the intermediate of isooctyloxy phosphate. Add tridecyl tertiary carbon primary amine and triethylamine successively to the phosphoric acid ester and 200ml ethylbenzene at 10℃~20℃, and react at 15℃~20℃ for 2h, at 50℃~60℃ React for 3h, then add benzotriazole powder and react at 120℃~135℃ for 4h. Nitrogen protection is required during the entire reaction and distillation process. After the reaction is completed, it is filtered, washed, dried and purified, and the obtained yellow transparent liquid is an anti-wear additive isooctyloxy (tridecyl t...

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Abstract

The invention provides an extreme pressure antiwear additive and a preparation method and application thereof; the extreme pressure antiwear additive has a general formula structure as shown in the specification, wherein R1, R2 and R3 in the formula is respectively alkyl groups, aryl groups or aralkyl of a C4-C20 linear chain or branched chain. The extreme pressure antiwear additive provided by the invention is formed by reacting phosphorus oxychloride, C1-C20 alcohols, organic amine and benzotriazole. The extreme pressure antiwear additive provided by the invention can be applied to lubrication oil and lubricating grease with 0.1-2.0wt% of recommended dosage. The extreme pressure antiwear additive provided by the invention has moderate chemical activity, good oil solubility, very good compatibility with other addition agents, no peculiar smell and good thermal oxidation stability, and can effectively reduce the abrasion of devices and oil sedimentation as well as generation of oil sludge. After applied to gear oil, the extreme pressure antiwear additive has excellent antiwear performance and thermal oxidation stability; and simultaneously the extreme pressure antiwear additive can be applied to a lubricating grease and automatic transmission liquid and hydraulic oil of automobiles.

Description

Technical field [0001] The invention relates to the field of lubricating oil additives, in particular to an extreme pressure antiwear agent and a preparation method and application thereof. technical background [0002] At present, the widely used lubricating oil (grease) ashless antiwear additives mainly include di-n-butyl phosphite (T304), tricresyl phosphate (T306), thiophosphoric acid-formaldehyde-amine condensate (T305), thiophosphoric acid Double ester amine salt (T307), phosphate ester amine salt (T308B), etc., there are not many varieties, and each has its own advantages and disadvantages. For example, di-n-butyl phosphite is too active and corrodes severely during use; tricresyl phosphate oil film strength Not high; sulfur phosphoric acid-formaldehyde-amine condensate, sulfur phosphoric acid double ester amine salt has a very odor; phosphate ester amine salt has poor extreme pressure anti-wear performance and thermal stability. [0003] CN1465581A reports a pesticide pest...

Claims

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Application Information

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IPC IPC(8): C10M137/08C10M177/00C07F9/6518C10N30/06C10N40/08C10N40/04C10N50/10
Inventor 孙兰凤
Owner 天津市金岛润滑科技股份有限公司
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