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Preparation method of lubricating oil anti-wear agent

A technology of antiwear agent and lubricating oil, which is applied in the field of preparation of lubricating oil antiwear agent, can solve problems such as poor component compatibility, unstable raw material compatibility, precipitation, etc., achieve low friction coefficient, increase oxidation induction time, Good oxidation stability effect

Active Publication Date: 2022-05-13
重庆昆崧科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the above lubricating oil additives have the problem of unstable raw material compatibility, such as poor compatibility with certain components, which will lead to precipitation

Method used

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  • Preparation method of lubricating oil anti-wear agent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The lubricating oil antiwear agent is specifically prepared according to the following steps:

[0045]A. In terms of parts by mass, put 100 parts of n-butyl acrylate, 0.5 parts of initiator azobisisobutyronitrile AIBN and 80 parts of ethyl acetate into the reaction kettle with agitator and condenser, and put s , 1.5 parts of s'-di(α,α'-methyl-α"-acetic acid) trithiocarbonate (RAFT reagent), heated to 70°C for reflux reaction for 8 hours, after the reaction, at 60°C and 800Pa Distilled under reduced pressure for 2 hours to remove the solvent ethyl acetate to obtain the interpolymer A (measured weight average molecular weight Mw=29500);

[0046] B. Put 100 parts of polymer A into a stirred vacuum distillation reactor, add 30 parts of ethanolamine, 2.0 parts of catalyst DOO1 cationic resin, and conduct vacuum distillation reaction at 80°C for 8 hours, increase the vacuum distillation temperature to 140°C and continue to reduce the pressure Distill 4h, filter out catalyst ...

Embodiment 2

[0049] The lubricating oil antiwear agent is specifically prepared according to the following steps:

[0050] A. In terms of parts by mass, put 100 parts of n-butyl acrylate, 1.0 parts of initiator azobisisobutyronitrile AIBN and 100 parts of ethyl acetate into the reaction kettle with agitator and condenser, and put s , 2.0 parts of s'-bis(α,α'-methyl-α"-acetic acid) trithiocarbonate (RAFT reagent), heated to 75°C for reflux reaction for 8h, after the reaction, at 65°C and 1000Pa Distilled under reduced pressure for 2.5h to remove the solvent ethyl acetate to obtain polymer A (measured weight average molecular weight Mw=15000);

[0051] B. Put 100 parts of polymer A into a stirred vacuum distillation reaction kettle, add 30 parts of ethanolamine, 2.0 parts of catalyst DOO1 cationic resin, and react under vacuum distillation at 95°C for 6h, increase the vacuum distillation temperature to 150°C and continue to reduce Pressure distillation 3h, filter out catalyst cationic resin...

Embodiment 3

[0054] The lubricating oil antiwear agent is specifically prepared according to the following steps:

[0055] A. In terms of parts by mass, put 100 parts of n-butyl acrylate, 0.8 parts of initiator azobisisobutyronitrile AIBN and 90 parts of ethyl acetate into the reaction kettle with agitator and condenser, and put s , 1.8 parts of s'-bis(α,α'-methyl-α"-acetic acid) trithiocarbonate (RAFT reagent), heated to 72°C for reflux reaction for 9h, after the reaction, control the temperature at 62.5°C and vacuum pressure Under the condition of 900Pa, the solvent ethyl acetate was removed by distillation under reduced pressure for 2h to obtain block polymer A (the weight average molecular weight Mw=22700 was determined by molecular permeation gel chromatography);

[0056] B. Put 100 parts of polymer A into a stirred vacuum distillation reaction kettle, add 30 parts of ethanolamine, 2.0 parts of catalyst DOO1 cationic resin, react under vacuum distillation at 90°C for 7h, increase the ...

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Abstract

The invention belongs to the technical field of lubricating compositions characterized by reaction product additives with unknown or incompletely determined structures, and specifically relates to a preparation method of lubricating oil anti-wear agents, which includes the following steps: A. Using n-butyl acrylate as raw material; Azobisisobutyronitrile is used as the initiator, s, s'-bis (α,α'-methyl-α"-acetic acid) trithiocarbonate is used as the chain transfer agent, and the polymerization reaction is carried out in the presence of a solvent, and then the pressure is reduced Distill the solvent to obtain polymer A; B. Use cationic resin as a catalyst and esterify polymer A with ethanolamine to obtain polymer A containing -NH. 2 Polymer B of the group; C. Polymer B and molybdenum trioxide are heated to 127-135°C in the presence of N,N-dimethylformamide and xylene, refluxed for 4-5 hours, and then cooled to 60 -80°C, add hydrazine hydrate and continue stirring for 2-3 hours until the reaction substrate turns blue-green or dark green. Distillate the xylene under reduced pressure and filter. The lubricating oil anti-wear agent prepared by the method of the present invention has good raw material compatibility stability.

Description

technical field [0001] The invention belongs to the technical field of lubricating compositions characterized by reaction product additives with unknown or incomplete structures, and specifically relates to a preparation method of lubricating oil antiwear agents. Background technique [0002] With the improvement of industrial automation in modern production, the degree of automation, precision and reliability of automation equipment is getting higher and higher, and the requirements for the lubrication effect of mechanical equipment are getting higher and higher ("ball screw and hydraulic transmission Application on Equipment", Mingguang Wang, Henan Science and Technology, Issue 16, 2011, Line 1 of the Abstract on Page 64, Publication Date, December 31, 2011; "A Brief Analysis of the Lubrication Management of Mining Equipment", Liu Yunhua, etc., Automation Application , Issue 10, 2018, Lines 1-2 of the abstract on page 135, published on December 31, 2018). In order to meet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M145/14C08F8/32C08F120/18C10N30/06
CPCC10M145/14C08F8/32C10M2209/084C08F120/18
Inventor 蔡国星李贤平
Owner 重庆昆崧科技有限公司
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