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Lubricating oil anti-emulsifying agent and preparation method thereof

An anti-emulsifier, lubricating oil technology, applied in lubricating compositions, additives, petroleum industry and other directions, can solve the problems of slow oil-water separation speed, complex preparation process, large amount of consumption, etc., and achieve fast oil-water separation speed, simple preparation process, Add less effect

Inactive Publication Date: 2011-10-05
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned preparation method requires special safety design due to the use of flammable and explosive ethylene oxide as a raw material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Add 4g of ethylene glycol into the reaction kettle, and then add 1g of potassium methylate; repeatedly vacuumize and feed nitrogen several times to replace the air in the reaction kettle; raise the temperature to 40°C for 1.5 hours under vacuum; then in the reaction kettle Introduce nitrogen and raise the temperature to 90°C, add 60g of glycidol dropwise within 12 hours; after the reaction is completed, cool down to 40°C, add 4.2g of potassium hydride, react for 1 hour and then pump vacuum and nitrogen for 3 times, and then pass in nitrogen Under normal circumstances, the temperature was raised to 120°C, 30g of propylene oxide was added dropwise, and reacted for 8 hours; after the reaction was completed, 600g of methanol was added, followed by filtration with cationic resin and vacuum drying to obtain a macromolecular polymer.

[0016] Add 4g of the above-mentioned macromolecular polymer and 20g of pyridine into the reactor; prepare a solution of 2,2-difluoro-1,3-dimethy...

Embodiment 2

[0019] Add 5 g of ethylene glycol into the reaction kettle, and then add 1.25 g of potassium hydride; repeatedly vacuumize and feed nitrogen several times to replace the air in the reaction kettle; raise the temperature to 50°C for 3 hours under vacuum; then in the reaction kettle Introduce nitrogen and heat up to 120°C, add 72g of glycidol dropwise within 15 hours; after the reaction is completed, cool down to 40°C, add 6g of potassium hydride, react for 1.5 hours and then vacuum and nitrogen for 3 times, and then nitrogen Under normal circumstances, the temperature was raised to 125°C, 33g of propylene oxide was added dropwise, and reacted for 6 hours; after the reaction was completed, 1250g of methanol was added, followed by filtration with a cationic resin, and vacuum drying to obtain a macromolecular polymer.

[0020] Add 5g of the above-mentioned macromolecular polymer and 50g of 1,3-dimethylimidazolidinone into the reactor; add 3g of 2,2-difluoro-1,3-dimethylimidazolidin...

Embodiment 3

[0023] Add 6g of ethylene glycol into the reaction kettle, and then add 1g of sodium methoxide; repeatedly vacuumize and feed in nitrogen several times to replace the air in the reaction kettle; raise the temperature to 60°C for 1 hour under vacuum; then in the reaction kettle Introduce nitrogen and raise the temperature to 110°C, add 90g of glycidol dropwise within 17 hours; after the reaction is completed, cool down to 40°C, add 12g of potassium hydride, react for 3 hours and then vacuum and nitrogen for 3 times, and then in the case of nitrogen The temperature was raised to 125° C., and 72 g of propylene oxide was added dropwise, and reacted for 11 hours; after the reaction was completed, 1200 g of methanol was added, followed by filtration with a cationic resin, and vacuum drying to obtain a macromolecular polymer.

[0024] Add 6g of the above-mentioned macromolecular polymer and 48g of pyridine into the reactor; prepare a solution of 6g of 2,2-difluoro-1,3-dimethylimidazol...

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PUM

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Abstract

The invention discloses a method for preparing a lubricating oil anti-emulsifying agent. The method comprises the following steps of: preparing polyglycidyl ether by using polyatomic alcohol as an initiator, potassium methoxide and potassium hydride as initiating agents, and glycidol and epoxy propane as monomers by an anionic polymerization method; and reacting by using 2,2-difluoro-1,3-dimethylimidazolone as a fluorination reagent at the temperature of between -5 and 30 DEG C to obtain a fluorine-containing emulsifying agent. Oil-water separation can be realized within 25 seconds by adding2.0*10<-3>g / L of anti-emulsifying agent into 150SN of lubricating oil base oil. The lubricating oil anti-emulsifying agent and the preparation method have the characteristics that: reaction equipmentis simple, a reaction condition is mild, a product has high anti-emulsifying performance, and the like.

Description

technical field [0001] The invention relates to an anti-emulsifier, in particular to an anti-emulsifier for lubricating oil and a preparation method thereof. Background technique [0002] Lubricating equipment, especially in the iron and steel industry, coal industry and other mechanical equipment, is easy to be mixed with water in the hydraulic system when lubricating oil is used. If the oil-water separation cannot be realized in time, it will change the lubrication state of the oil, affect the formation of the oil film, and cause mechanical corrosion and wear. In addition, industrial gear oils, turbine oils and many industrial oils have higher requirements for demulsification performance. . [0003] Adding anti-emulsifier is the main way to improve the anti-emulsification ability of lubricating oil. When water is mixed into the lubricating oil, the anti-emulsifier can quickly change the oil / water interfacial tension, accelerate the coalescence rate of water droplets, rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M147/04C08G65/337C08G65/28
Inventor 张越颉蕊丽阎育才宋文静
Owner SHANXI UNIV
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