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Preparation method of bononized lubricating oil dispersing agent

A technology of lubricating oil dispersant and boronation, which is applied in the field of preparation of boronated lubricating oil dispersant, to achieve the effects of good dispersion performance, good oxidation resistance and strong dispersing ability

Active Publication Date: 2014-04-09
临沂星火知识产权服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the operation of the internal combustion engine, a lot of varnish, sludge and carbon deposits are formed, causing blockage of the oil circuit and filter screen, wear of the piston, sticking of the piston ring, And because there is a lot of water in the oil sludge, the internal combustion engine is easily corroded, shortening the service life of the internal combustion engine

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Synthesis of polyalkene-based succinic anhydride: add high-activity end-alkenyl polyisobutadiene and maleic anhydride in a three-neck flask with a molar ratio of 1:1, stir and heat up to a predetermined temperature, react for 6 hours, and use nitrogen Unreacted maleic anhydride was blown off to obtain polyalkenyl succinic anhydride.

[0027] (2) Add polyolefin-based succinic anhydride to a three-necked flask under nitrogen protection, heat up to 80°C, add 0.5 g of benzoyl peroxide as an initiator, stir well, add methacrylate, methacrylate and The molar ratio of polyolefin-based succinic anhydride is 1:1, the reaction is 6h, and the intermediate product A is separated;

[0028] (3) Add the intermediate product A and toluene with 10% mass of A in the three-necked flask, raise the temperature to 120°C under the protection of nitrogen, add tetraethylenepentamine, the molar ratio of A and tetraethylenepentamine is 1:1 and react for 5h, After the reaction, the solvent wa...

Embodiment 2

[0031] (1) Synthesis of polyalkene-based succinic anhydride: Add highly active terminal alkenyl polyisobutadiene and maleic anhydride in a three-neck flask with a molar ratio of 1:2, stir and heat up to the predetermined temperature, react for 8 hours, and use nitrogen Unreacted maleic anhydride was blown off to obtain polyalkenyl succinic anhydride.

[0032] (2) Add polyolefin-based succinic anhydride to a three-necked flask under nitrogen protection, heat up to 100°C, add 1 g of benzoyl peroxide as an initiator, stir evenly, add methacrylate, methacrylate and poly The molar ratio of alkenyl succinic anhydride is 5:1, react for 7h, and separate the intermediate product A;

[0033] (3) Add the intermediate product A and toluene with 15% mass of A in the three-necked flask, raise the temperature to 80°C under the protection of nitrogen, add tetraethylenepentamine, the molar ratio of A and tetraethylenepentamine is 1:1.5 and react for 8h, After the reaction, the solvent was rem...

Embodiment 3

[0036] (1) Synthesis of polyalkene-based succinic anhydride: add highly active terminal alkenyl polyisobutadiene and maleic anhydride in a three-neck flask with a molar ratio of 1:3, stir and heat up to a predetermined temperature, react for 7 hours, and use nitrogen Unreacted maleic anhydride was blown off to obtain polyalkenyl succinic anhydride.

[0037] (2) Add polyolefin-based succinic anhydride in a three-necked flask under nitrogen protection, heat up to 120°C, add 2 g of benzoyl peroxide as an initiator, stir evenly, add methacrylate, methacrylate and poly The molar ratio of alkenyl succinic anhydride is 10:1, react for 8h, and separate the intermediate product A;

[0038] (3) Add the intermediate product A and toluene with 30% mass of A in the three-necked flask, raise the temperature to 100°C under the protection of nitrogen, add tetraethylenepentamine, and react for 6 hours with the molar ratio of A and tetraethylenepentamine being 1:3, After the reaction, the solv...

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Abstract

The invention belongs to the technical field of lubricating oil additives, and particularly relates to a preparation method of a bononized lubricating oil dispersing agent. The method comprises the following steps: reacting alkenyl-terminated polyisobutyldiene and maleic anhydride to obtain polyalkylene butanedioic anhydride, heating, adding an initiator, stirring uniformly, adding methacrylate, reacting, and separating an intermediate product A; heating the intermediate product A and toluene, adding tetraethylenepentamine, reacting the intermediate product A with the tetraethylenepentamine, removing the solvent after the reaction finishes, and collecting a product B; and heating the product B, adding a bononizing agent, an accelerator and a solvent, heating to react, and recovering the solvent, thereby obtaining the bononized lubricating oil dispersing agent. The generated product has the advantages of no boric acid precipitation, high temperature resistance, favorable oxidation resistance, low micelle concentration, favorable dispersibility, favorable wear resistance under extreme pressure conditions, simple technique, no need of special equipment in the production process, and low production cost; and the solvent used in the bononizing process can be recovered and recycled.

Description

Technical field [0001] The present invention is the field of lubricating oil additive technology, which involves a method of preparation of a boron lubricant dispersed agent. Background technique [0002] During the operation of the internal combustion engine, many paint films, clay and charcoal have been formed, causing the obstruction of oil circuit and filter, piston wear, and piston ring bonding. Moreover, the mud contains many water, which makes the internal combustion engine easily rust.Shorten the life of the internal combustion engine.In order to solve the above problems, people are widely adopted to add a clean dispersant in lubricant. The role of dispersing agents is to scattered the sludge, paint film and charcoal foretopday in the oil, and prevent them from forming sludge, paint film and charcoal accumulation., Extend the oil exchange period, thereby extending the life of the internal combustion engine. [0003] Differentians are generally nitride -containing compoun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F279/00C08F8/42C08F8/32C08F36/20C08F8/46C10M155/00C10N30/04
Inventor 车春玲
Owner 临沂星火知识产权服务有限公司
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