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Self-emulsified polyester, preparation method of polyester as well as minimal quantity lubrication agent prepared from polyester

A self-emulsifying polyester, trace lubricant technology, applied in lubricating compositions, base materials, petroleum industry, etc., can solve problems such as environmental impact, achieve good lubricity, reduce harm to the environment and workers, and reduce pollution.

Active Publication Date: 2014-12-24
SHANGHAI JINZHAO ENERGY SAVING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the lubricant has good lubricating cooling and extreme pressure performance, a large amount of chlorine, sulfur, and phosphorus compounds still have a certain impact on the environment. At the same time, the processed workpiece still needs to be cleaned with cleaning agents before it can be coated. Waiting for the next process will bring greater pressure to the environment

Method used

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  • Self-emulsified polyester, preparation method of polyester as well as minimal quantity lubrication agent prepared from polyester
  • Self-emulsified polyester, preparation method of polyester as well as minimal quantity lubrication agent prepared from polyester
  • Self-emulsified polyester, preparation method of polyester as well as minimal quantity lubrication agent prepared from polyester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Step 1. Put 106.12kg (1000mol) of diethylene glycol and 116.07kg (1000mol) of maleic acid into the reactor respectively, add 3kg of cation exchange resin, fill in nitrogen to convert the air in the reactor, and stir at the same time to raise the temperature to 220°C , reacted for 48 hours.

[0044] During the above reaction process, water was drained once every 16 hours under reduced pressure, and water was drained 3 times in total.

[0045] Step 2: Add 7 kg of oleic acid into the reaction kettle, and simultaneously stir, decompress, drain, and lower the temperature to obtain a self-emulsifying polyester.

[0046] Step 3: When the temperature drops below 100°C, the catalyst is removed. Take 100kg of self-emulsifying polyester, 10kg of triethanolamine, 1kg of ammonium molybdate, 1kg of potassium tetraborate, 1kg of dipotassium hydrogen phosphate, and 0.1kg of potassium sorbate, add them to 500kg of water, stir until completely transparent, and prepare a trace lubricant...

Embodiment 2

[0048] Step 1. Put 150.2kg (1000mol) of triethylene glycol and 146.14kg (1000mol) of adipic acid into the reactor respectively, add 5kg of cation exchange resin, fill in nitrogen to convert the air in the reactor, and stir at the same time to raise the temperature to 200°C , reacted for 72 hours.

[0049] During the above reaction process, water was drained once every 18 hours under reduced pressure, and water was drained 4 times in total.

[0050] Step 2: Add 14.5kg of lauric acid to the reactor to remove the catalyst. Stirring, decompression, drainage, and cooling at the same time, a self-emulsifying polyester is prepared.

[0051] Step 3: When the temperature drops below 100°C, take 100kg of self-emulsifying polyester, add it to 100kg of water, stir until it is completely transparent, and prepare a micro lubricant.

Embodiment 3

[0053] Step 1. Put 222.28kg (1000mol) of tetraethylene glycol and 174.19kg (1000mol) of suberic acid into the reactor respectively, add 6kg of cation exchange resin, fill in nitrogen to convert the air in the reactor, and stir at the same time to raise the temperature to 210°C , reacted for 60 hours.

[0054] During the above reaction process, water was drained once every 15 hours under reduced pressure, and water was drained 4 times in total.

[0055] Step 2: Add 16kg of stearic acid into the reaction kettle, and simultaneously stir, decompress, drain, and lower the temperature to obtain a self-emulsifying polyester.

[0056] Step 3: When the temperature drops below 100°C, the catalyst is removed. Take 100kg of self-emulsifying polyester and 2kg of potassium hydroxide, add it into 200kg of water, stir until completely transparent, and prepare a micro lubricant.

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Abstract

The invention provides self-emulsified polyester. The self-emulsified polyester is characterized in that the structural formula of the self-emulsified polyester is shown in the specification, wherein R1 refers to an alkyl group with the carbon atom number in a range of 9-19, R2 refers to an alkyl group with the carbon atom number in a range of 2-10, n refers to an integer in a range of 2-5, and m refers to an integer not lower than 10. The self-emulsified polyester is good in lubricity and extreme pressure anti-wear property, can form a layer of compact physical protection film on a metal surface during metal machining, is a good surfactant, and can completely or partially replace added ingredients such as chloride, sulfide, phosphide and the like which are harmful for environmental protection in the technical field of lubrication.

Description

technical field [0001] The invention relates to the technical field of synthetic chemistry, in particular to a self-emulsifying polyester, a preparation method thereof, and a micro lubricant prepared from the polyester. Background technique [0002] Cutting oils, coolants, emulsions and other lubricants used in traditional metal processing lubrication and cooling are used in large quantities, and traditional cutting oils use mineral oil as the base oil, which is not easy to decompose in the natural environment, and most of the additives used are harmful to the human body. Harmful to the environment, it not only wastes resources, but also causes huge pollution of processing sites and the environment. [0003] The processed workpieces will be cleaned with a large amount of cleaning solvent before the next process, resulting in a large amount of pollutant discharge. At the same time, the cleaning agent often contains chlorides (such as methylene chloride, tetrachloroethylene), ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/91C08G63/672C10M107/32
Inventor 张乃庆吴启东曹华军
Owner SHANGHAI JINZHAO ENERGY SAVING TECH
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