Preparation method of phosphorus-nitrogen type ash-free extreme pressure anti-wear agent and extreme pressure anti-wear lubricating oil

An extreme pressure antiwear agent, phosphorus nitrogen type technology, applied in the field of lubricating oil, can solve the problems of insufficient antiwear performance of phosphoramidite ester, complicated post-treatment process, unpleasant smell of additives, etc., and achieve excellent extreme pressure antiwear performance, Good demulsibility, no impact on the environment

Pending Publication Date: 2021-10-08
XINXIANG RICHFUL LUBE ADDITIVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Among them, the synthesis process of patents CN101037638A and CN101555258A is relatively cumbersome, and the post-treatment process is complicated. Additives have a bad smell and impact on the environment

Method used

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  • Preparation method of phosphorus-nitrogen type ash-free extreme pressure anti-wear agent and extreme pressure anti-wear lubricating oil
  • Preparation method of phosphorus-nitrogen type ash-free extreme pressure anti-wear agent and extreme pressure anti-wear lubricating oil
  • Preparation method of phosphorus-nitrogen type ash-free extreme pressure anti-wear agent and extreme pressure anti-wear lubricating oil

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preparation example Construction

[0030] Such as figure 1 As shown, according to the preparation method of a kind of phosphorus nitrogen type ashless extreme pressure antiwear agent provided by the present invention, comprising:

[0031] Phosphorus oxychloride and alcohol compounds with a molar ratio of 1:1.2 to 1:2.2 are used, and n-hexane is used as a solvent for dilution;

[0032] Add the diluted phosphorus oxychloride and alcohol compounds dropwise into the reaction vessel, and at the same time pass nitrogen gas as a protective gas, and remove the hydrogen chloride gas generated in the reaction in time;

[0033] After the dropwise addition of phosphorus oxychloride and alcohol compounds is completed, the temperature is raised to 30-50°C and kept for 0.5-2 hours to obtain the intermediate alkoxy phosphorus oxychloride;

[0034] Add an organic amine compound with a molar ratio of 0.8:1 to 1.8:1 to phosphorus oxychloride and keep it at a temperature of 50 to 80°C for 1 to 3 hours to obtain phosphoramidite as...

Embodiment 1

[0049] Embodiment 1: First use n-hexane as solvent to dilute 16.5g phosphorus oxychloride and 21g n-hexanol respectively, and simultaneously add it dropwise to a four-necked bottle with nitrogen gas and connected to a tail gas absorption device, drop at room temperature After the addition, raise the temperature to 50°C and keep it warm for about 1.5h to obtain alkoxyphosphoryl chloride; then add 10g of dodecylamine, raise the temperature to 60°C and keep it warm for 1h to get phosphoramidite.

Embodiment 2

[0050] Embodiment two: the n-hexanol among the embodiment one is changed into the n-butanol of equivalence, all the other parts are kept the same with the embodiment one, make light yellow transparent finished product.

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Abstract

The invention discloses a preparation method of a phosphorus-nitrogen type ash-free extreme pressure anti-wear agent and extreme pressure anti-wear lubricating oil. The preparation method comprises the following steps: respectively diluting phosphorus oxychloride and an alcohol compound in a molar ratio of 1:1.2-1:2.2 by using normal hexane, dropwise adding into a reaction container, introducing nitrogen as a protective gas, and removing generated hydrogen chloride; and heating to 30-50 DEG C after dropwise adding, keeping the temperature for 0.5-2 hours to obtain an intermediate alkoxy phosphoryl chloride, adding an organic amine compound in a molar ratio of the organic amine compound to the phosphorus oxychloride of (0.8:1)-(1.8:1), and keeping at the temperature of 50-80 DEG C for 1-3 hours to obtain phosphamide ester serving as an anti-wear agent. According to the technical scheme, the prepared extreme pressure anti-wear agent has excellent extreme pressure anti-wear performance and good demulsibility, does not contain sulfur, is simple in preparation process, low in industrialization difficulty and free of generation of waste pollution byproducts, the yield can reach 99% or above, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of lubricating oil, in particular to a preparation method of a phosphorus nitrogen type ashless extreme pressure antiwear agent and an extreme pressure antiwear lubricating oil. Background technique [0002] Among the lubricating oils for various heavy-duty gear transmissions, the gear oil must have high-torque low-speed load-bearing performance, and must have excellent anti-emulsification and anti-corrosion properties. Anti-wear agents that meet high-torque and low-speed load-bearing performance are usually phosphorus-containing agents. There are many types of phosphorus-containing agents. Phosphorus-nitrogen anti-wear agents are widely used in gear oils and hydraulic oils due to their good extreme pressure and anti-wear properties. . [0003] Gear oil is often inevitably mixed with some cooling water during use. If its anti-emulsification performance is not good, it will form an emulsion with the mixed wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/24C10M137/04C10N30/06C10N30/18
CPCC07F9/2458C07F9/2408C10M137/04C10M2223/04C10N2030/06C10N2030/18
Inventor 王爽袁小二徐坤范金凤
Owner XINXIANG RICHFUL LUBE ADDITIVE CO LTD
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