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Production method for synthesizing environment-friendly magnesium isostearate detergent

A technology of isostearic acid and production method, applied in the field of lubricating oil, can solve problems such as difficulty, unstable mass transfer, quantitative calculation of carbon dioxide waste, and achieve the effects of simple operation and good experimental reproducibility

Inactive Publication Date: 2015-04-29
QINGDAO WUWEI THERMAL INSULATION MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the synthesis of detergent is a heterogeneous reaction, there are certain problems in the traditional synthesis process: ① Since the whole synthesis reaction is a heterogeneous reaction, although there is an accelerator added, there is still the problem of unstable mass transfer, especially In the carbonation reaction where gas, liquid and solid three-phase coexist, the reproducibility of the experiment is poor; ② most of the current synthesis processes use the carbon dioxide open evacuation method to react during the carbonation process, and the reaction is not timely All of the carbon dioxide is discharged into the air, resulting in waste of carbon dioxide and difficulty in quantitative calculation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A kind of production method of synthetic environment-friendly type magnesium isostearate detergent, described method comprises the following steps:

[0014] (1) In a 100 mL stainless steel autoclave equipped with a magnetic stirrer, add isostearic acid, diluent oil, xylene, methanol, ammonia water and active-60 magnesium oxide in sequence, the isostearic acid, diluent oil, di The weight-to-number ratios of toluene, methanol, ammonia water and active-60 magnesium oxide are: 25 parts, 10 parts, 15 parts, 25 parts, 10 parts, 15 parts; seal the autoclave, then start magnetic stirring, at 50 ℃ Carry out neutralization reaction 1h under condition;

[0015] (2) Then raise the temperature to 62°C, press in carbon dioxide gas for carbonation reaction, the pressure of carbon dioxide is 3MPa, and the carbonation reaction time is 2.5h;

[0016] (3) After the reaction is completed, the reaction mixture is centrifuged and filtered to remove residue, and then the solvent is removed t...

Embodiment 2

[0018] A kind of production method of synthetic environment-friendly type magnesium isostearate detergent, described method comprises the following steps:

[0019] (1) In a 100 mL stainless steel autoclave equipped with a magnetic stirrer, add isostearic acid, diluent oil, xylene, methanol, ammonia water and active-60 magnesium oxide in sequence, the isostearic acid, diluent oil, di The weight-to-number ratios of toluene, methanol, ammonia water and active-60 magnesium oxide are: 45 parts, 25 parts, 25 parts, 40 parts, 25 parts, 40 parts; seal the autoclave, then start the magnetic stirring, at 65 ℃ Carry out neutralization reaction 3h under condition;

[0020] (2) Then raise the temperature to 62°C, press in carbon dioxide gas for carbonation reaction, the pressure of carbon dioxide is 7MPa, and the carbonation reaction time is 1h;

[0021] (3) After the reaction is completed, the reaction mixture is centrifuged and filtered to remove residue, and then the solvent is removed...

Embodiment 3

[0023] A kind of production method of synthetic environment-friendly type magnesium isostearate detergent, described method comprises the following steps:

[0024] (1) In a 100 mL stainless steel autoclave equipped with a magnetic stirrer, add isostearic acid, diluent oil, xylene, methanol, ammonia water and active-60 magnesium oxide in sequence, the isostearic acid, diluent oil, di The ratio of parts by weight of toluene, methyl alcohol, ammonia water and active-60 magnesium oxide is: 30 parts, 20 parts, 20 parts, 35 parts, 20 parts, 35 parts; seal the autoclave, then start magnetic stirring, at 50-65 Under the condition of ℃, carry out the neutralization reaction for 1-3h;

[0025] (2) Then heat up to 60°C, press in carbon dioxide gas for carbonation reaction, the pressure of carbon dioxide is 5MPa, and the carbonation reaction time is 2h;

[0026] (3) After the reaction is completed, the reaction mixture is centrifuged and filtered to remove residue, and then the solvent i...

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PUM

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Abstract

The invention discloses a production method for synthesizing an environment-friendly magnesium isostearate detergent in the field of lubricating oil. The method comprises the following steps: (1) sequentially adding isostearic acid, dilute oil, dimethylbenzene, methanol, ammonia water and active-60 magnesium oxide into a 100mL stainless steel high-pressure kettle with a magnetic stirrer, sealing the high-pressure kettle, starting magnetic stirring, and performing a neutralizing reaction for 1-3h at 50-65 DEG C; (2) heating to 55-62 DEG C and pressing in a carbon dioxide gas to perform a carbonation reaction; and (3) after the reaction, centrifuging the reaction mixture and filtering to remove slag, and removing the solvent to obtain the oil-soluble magnesium isostearate detergent. The method disclosed by the invention has the beneficial effects that a detergent product with high base number over 350mg(KOH) / g is synthesized, and the synthesis method is easy to operate and has good experimental reproducibility.

Description

technical field [0001] The invention belongs to the field of lubricating oil, and in particular relates to a production method for synthesizing an environment-friendly magnesium isostearate detergent. Background technique [0002] As a branched chain fatty acid, isostearic acid has the characteristics of low melting point, good oxidation stability and good hydrolysis stability, and is indirectly obtained from plant resources, which meets the requirements of environmental protection and sustainable development. The traditional synthesis process of lubricating oil detergents generally involves the first neutralization reaction of organic acids and basic compounds, and then the carbonation reaction under the action of some additives. However, since the synthesis of detergent is a heterogeneous reaction, there are certain problems in the traditional synthesis process: ① Since the whole synthesis reaction is a heterogeneous reaction, although there is an accelerator added, there ...

Claims

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Application Information

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IPC IPC(8): C07C53/126C07C51/41C10M129/40C10N30/04
CPCC07C51/412
Inventor 李本明
Owner QINGDAO WUWEI THERMAL INSULATION MATERIAL
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