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Preparation of high-wear-resistance anti-friction aromatic nitrogenous borate lubricating oil additive

A technology of lubricating oil additive and nitrogen borate ester, which is applied in the field of mechanical friction lubrication, can solve the problems of lubricating oil friction reduction, anti-wear performance decline, low addition amount thermal stability, boron active ingredient loss, etc., to reduce pollution, Simple method and high atom utilization

Inactive Publication Date: 2021-02-26
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although organic borates are used as lubricating oil additives with the characteristics of environmental friendliness, multi-function, low addition amount, high thermal stability, etc., but like all ester compounds, they have the disadvantage of poor hydrolytic stability
When the organic borate is hydrolyzed, the boron active ingredient in the additive will be lost, thereby reducing the friction reduction and anti-wear properties of the lubricating oil

Method used

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  • Preparation of high-wear-resistance anti-friction aromatic nitrogenous borate lubricating oil additive
  • Preparation of high-wear-resistance anti-friction aromatic nitrogenous borate lubricating oil additive
  • Preparation of high-wear-resistance anti-friction aromatic nitrogenous borate lubricating oil additive

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preparation example Construction

[0025] As another aspect of the present invention, the present invention provides a kind of preparation method of high anti-wear and anti-friction lubricating oil additive, comprising the following steps:

[0026] Preparation of sulfur-nitrogen-containing monoalcohol: adding di-n-butylamine into the reaction vessel, sequentially adding equimolar amounts of carbon disulfide and propylene oxide, and reacting for 1.5 hours to obtain the target compound;

[0027] Preparation of aromatic diethanolamide: add equimolar amounts of aromatic carboxylic acid and thionyl chloride in sequence to the reaction vessel, react for 4 hours, and distill under reduced pressure to remove excess raw materials to obtain aromatic acid chloride intermediates, then add equimolar Amount of diethanolamine, dichloromethane, reacted for 6 hours to obtain the target product;

[0028] Preparation of aromatic nitrogen-containing borates: add equimolar amounts of sulfur-nitrogen-containing monoalcohol, boric ac...

Embodiment 1

[0033] Preparation of high anti-wear and anti-friction lubricating oil additives:

[0034] Add equimolar amounts of benzoic acid and thionyl chloride successively to the reaction vessel, react for 4 hours, and remove excess raw materials by distillation under reduced pressure to obtain benzoyl chloride, then add equimolar amounts of diethanolamine and dichloromethane successively, and react 6 Hour, obtain benzoic acid diethanolamide;

[0035] Di-n-butylamine is added in the reaction vessel, and carbon disulfide and propylene oxide of equimolar amounts are added successively, and reacted for 1.5 hours to obtain sulfur nitrogen-containing monohydric alcohol;

[0036] Add equimolar amounts of sulfur-nitrogen-containing monoalcohol, boric acid and benzoic acid diethanolamide into the reaction vessel, heat and react for 2 hours under the protection of nitrogen, and evaporate the solvent to obtain a yellow oily liquid, which is the aromatic nitrogen-containing borate .

Embodiment 2

[0038] The preparation method is the same as 1, the difference is that benzoic acid is replaced by phenylacetic acid.

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Abstract

The invention relates to a preparation method of an aromatic nitrogenous borate lubricating oil additive in the technical field of mechanical lubrication. The additive comprises the following raw materials: sulfur-containing nitrogen alcohol, boric acid and aromatic diethanolamide. Wherein the thiourea-containing alcohol is prepared from diamine compounds, carbon disulfide and epoxypropane as rawmaterials; wherein the aromatic diethanolamide is prepared by taking aromatic carboxylic acid, thionyl chloride and diethanol amine as raw materials; the high-wear-resistance anti-friction lubricatingoil additive is obtained by reaction of thiourea-containing alcohol, boric acid and aromatic diethanolamide. The synthesis method adopted by the invention is simple and feasible to operate, suitablefor large-scale industrial production and very strong in practicability. The lubricating oil additive prepared by the method can effectively protect easily worn machine parts, engines and other equipment, effectively increase the friction resistance of the lubricating oil and reduce the energy loss.

Description

technical field [0001] The invention relates to the technical field of mechanical friction lubrication, in particular to a high anti-wear lubricating oil additive. Background technique [0002] Lubricating oil is generally composed of base oil and additives. Base oil is the main component of lubricating oil, which determines the basic properties of lubricating oil; additives can make up for and improve the performance of base oil and give new properties. Organic borate is a A multi-functional lubricating oil additive with excellent anti-wear and anti-friction properties, excellent oil film strength, long service life, non-phosphorus, non-toxic, non-polluting, and wide anti-rust application range. The introduction of aromatic groups into borate additives will make borates have better oil solubility. Introducing sulfur, nitrogen and other elements into borate can make lubricating oil have better anti-wear performance. The currently used boric acid lubricating oils are added ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M139/00C07F5/04C10N30/06
CPCC07F5/04C10M139/00C10M2227/061
Inventor 张晨曦张文亚张冠军
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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