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A kind of water-soluble polyether amide carboxylate with defoaming and lubricating functions and its synthesis method

A technology of polyetheramide carboxylate and synthesis method, applied in lubricating compositions, additives, petroleum industry and other directions, can solve the problem that the lubricating properties of pure polyether fully synthetic cutting fluid cannot meet the machining requirements, affect the normal progress of machining, The problem of foam overflowing the storage tank, etc., to achieve the effect of improving amidation efficiency, good lubricity and small foam

Active Publication Date: 2021-02-02
NEUFTECH BIOTECH HEFEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When these polyethers are used together with organic carboxylic acid antirust agents, the foam can meet the requirements for low-pressure grinding conditions, but foam problems often occur in high-pressure, high-flow grinding processes, such as foam overflow storage on site. Groove and other conditions affect the normal progress of machining
For some processing with high lubrication requirements, the lubricating performance of pure polyether fully synthetic cutting fluid cannot meet the machining requirements, and it is necessary to add lubricants such as amides, oleate, and self-emulsifying esters to the fully synthetic cutting fluid, which will further increase the foam production

Method used

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  • A kind of water-soluble polyether amide carboxylate with defoaming and lubricating functions and its synthesis method
  • A kind of water-soluble polyether amide carboxylate with defoaming and lubricating functions and its synthesis method
  • A kind of water-soluble polyether amide carboxylate with defoaming and lubricating functions and its synthesis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Weigh 140g of polyetheramine with a molecular weight of 1400 and add it to a flat-bottomed flask, add 26g of itaconic acid while stirring, add 1.494g of p-toluenesulfonic acid catalyst after stirring evenly, heat while stirring, and the nitrogen flow rate is 5-10Nm 3 / h, control the temperature at 140°C, and react for 2 hours to obtain the amidation product, and the acid value of the amidation product is 44.9 mg KOH / g;

[0049] When the amidation product is cooled to 60-80°C, add 33.9g of diisopropanolamine to the amidation product, and react under normal pressure at 60-80°C for 40 minutes to obtain the final product.

Embodiment 2

[0051] Weigh 140g of polyetheramine with a molecular weight of 1400 and add it into a flat-bottomed flask, add 26g of itaconic acid while stirring, add 1.494g of paraformaldehyde catalyst after stirring evenly, heat while stirring, and the nitrogen flow rate is 5-10Nm 3 / h, control the temperature at 100°C, and react for 2 hours to obtain the amidation product, and the acid value of the amidation product is 45.7mg KOH / g;

[0052] When the temperature of the amidated product drops to 60-80°C, add 17.8g of AMP95 to the amidated product, and react under normal pressure at 60-80°C for 40 minutes to obtain the final product.

Embodiment 3

[0054] Weigh 200g of polyetheramine with a molecular weight of 2000 and add it into a flat-bottomed flask, add 26g of itaconic acid while stirring, add 2.034g of paraformaldehyde catalyst after stirring evenly, heat while stirring, and the nitrogen flow rate is 5-10Nm 3 / h, control the temperature at 120°C, and react for 3 hours to obtain the amidation product, and the acid value of the amidation product is 50.9 mg KOH / g;

[0055] When the temperature of the amidated product drops to 60-80°C, add 17.8g of AMP95 to the amidated product, and react under normal pressure at 60-80°C for 40 minutes to obtain the final product.

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Abstract

The invention discloses a water-soluble polyether amide carboxylate with defoaming and lubricating functions and a synthesis method thereof. It uses polyether amine and itaconic acid as raw materials, adds an appropriate amount of catalyst, and performs amidation reaction to obtain a product Then add special amine to carry out salt-forming reaction to obtain the target product. The water-soluble polyether amide carboxylate synthesized by the invention has the characteristics of good water solubility, good lubricity, and small foam, and also has a defoaming function, and can replace traditional cis or trans polyethers for metalworking fluids Among them, it can meet the grinding requirements of high pressure, high flow and high lubrication.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a method for synthesizing water-soluble polyetheramide carboxylate with defoaming and lubricating functions. Background technique [0002] With the development of metal cutting in the 21st century towards high speed, power and high precision, modern harsh processing conditions put forward higher and higher requirements for the quality of cutting fluid. Advanced manufacturing technologies such as CNC machine tools, machining centers and flexible manufacturing systems have been gradually popularized and applied, while advanced manufacturing technologies and cutting of difficult-to-machine materials are inseparable from cooling and lubrication technology. Therefore, cutting fluid is becoming more and more important. [0003] With the development of the processing industry, modern grinding machine processing has higher and higher requirements on the foam of cutting fluid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/00C10M149/12C10N30/06C10N30/18
CPCC08G65/00C10M149/12C10M2217/06C10N2030/06C10N2030/18
Inventor 程庆华倪杰陆静刘霁余杨柳洪宁
Owner NEUFTECH BIOTECH HEFEI
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