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Refining method for isopropyl myristate

A technology of isopropyl myristate and a refining method, which is applied in the field of organic compound preparation, can solve problems such as unfavorable economic benefits of enterprises, difficulty in reducing costs, and low production efficiency, so as to ensure product quality and long-term storage stability, and reduce production The effect of cost and convenient operation

Inactive Publication Date: 2011-11-23
TIANJIN CHEM REAGENT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The production method of isopropyl myristate is usually a direct esterification reaction, and the color of the product obtained is yellow, which is difficult to sell as a product, and must be further refined, that is, to carry out a decompression refining treatment step. The problems in this type of preparation method: ( 1) Due to the need to use an expensive high vacuum pump in the decompression refining treatment step, the method has the problems of many production equipment and high expenses, so it is difficult to reduce the cost; Indispensable and very time-consuming production steps in the isopropyl tetra-acid process, therefore, this method has the problems of long production time and low production efficiency, which is not conducive to the improvement of economic benefits of enterprises

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for refining isopropyl myristate, the steps are:

[0025] (1) Prepare the refined preparation: mix diatomaceous earth, magnesium hydroxide, activated carbon, magnesium sulfate, and potassium carbonate mixture evenly in a weight ratio of 1:1:5:1.5:0.5, totaling 0.1 kg.

[0026] (2) Esterification reaction step: drop into 100 kilograms of myristic acid successively, 220 kilograms of isopropanols, 0.3 kilograms of concentrated sulfuric acid in a 200 liters of reactors with heating device, electric stirring, thermometer water circulation condenser and vacuum oil-water separator Kilogram, under stirring, slight vacuum, heating to boiling reaction at the same time, keep boiling reflux state, continuously separate water from the oil-water separator, until no water is generated, stop heating, and the esterification reaction is terminated.

[0027] (3) Water washing step: add 50 kilograms of water to the mixed solution obtained after the esterification reaction, stir ev...

Embodiment 2

[0032] A method for refining isopropyl myristate, the steps are:

[0033] (1) Preparation of refined preparation: diatomaceous earth, magnesium hydroxide, activated carbon, magnesium sulfate, and potassium carbonate mixture were uniformly mixed in a weight ratio of 1:1:5:1.5:0.5, with a total of 0.2 kg.

[0034] (2) Esterification reaction step: drop into 100 kilograms of myristic acid successively, 220 kilograms of isopropanols, 0.3 kilograms of concentrated sulfuric acid in a 200 liters of reactors with heating device, electric stirring, thermometer water circulation condenser and vacuum oil-water separator Kilogram, under stirring, slight vacuum, heating to boiling reaction at the same time, keep boiling reflux state, continuously separate water from the oil-water separator, until no water is generated, stop heating, and the esterification reaction is terminated.

[0035] (3) Water washing step: add 50 kg of water to the mixed solution obtained after the esterification reac...

Embodiment 3

[0040] A kind of refining method of isopropyl myristate, its steps are:

[0041] (1) Preparation of refined preparation: mix diatomaceous earth, magnesium hydroxide, activated carbon, magnesium sulfate, and potassium carbonate mixture evenly in a weight ratio of 1:1:5:1.5:0.5, 0.5 kg in total.

[0042] (2) Esterification reaction step: drop into 100 kilograms of myristic acid successively, 220 kilograms of isopropanols, 0.3 kilograms of concentrated sulfuric acid in a 200 liters of reactors with heating device, electric stirring, thermometer water circulation condenser and vacuum oil-water separator Kilogram, under stirring, slight vacuum, heating to boiling reaction at the same time, keep boiling reflux state, continuously separate water from the oil-water separator, until no water is generated, stop heating, and the esterification reaction is terminated.

[0043] (3) Water washing step: add 50 kg of water to the mixed solution obtained after the esterification reaction, stir...

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Abstract

The invention relates to a refining method for isopropyl myristate. According to the method, the product of isopropyl myristate is obtained through the steps of esterification, rinse, dealcoholization, refinement and filtration; a refining agent used therein is prepared from diatomite, magnesium hydroxide, active carbon, magnesium sulfate and potash which are mixed according to a certain ratio. According to the invention, utilization of the mixture of diatomite, magnesium hydroxide, active carbon, magnesium sulfate and potash as the refining agent for the preparation of isopropyl myristate enables the obtained product to have a light color, to be sold as a product without refinement under high vacuum and to be in complete accordance with requirements for technical targets. The invention is favorable for realizing industrial production and improving production efficiency; since the production step of refinement under high vacuum is omitted in the invention, no investment for high vacuum pumps is needed, thereby saving investment for equipment, reducing production cost and improving market competitiveness of the product.

Description

technical field [0001] The invention belongs to the field of organic compound preparation, in particular to a refined preparation for synthesizing isopropyl myristate and a preparation method thereof. Background technique [0002] Isopropyl myristate is a colorless transparent oily liquid, insoluble in water; it can be miscible with organic solvents such as alcohol, ether, methylene chloride, grease, etc., and is usually used as an emulsifier and wetting agent for cosmetics. In industrial production, isopropyl myristate is used more and more widely as an important organic compound, especially as an organic solvent and a raw material for organic synthesis. [0003] The production method of isopropyl myristate is usually a direct esterification reaction, and the color of the product obtained is yellow, which is difficult to sell as a product, and must be further refined, that is, to carry out a decompression refining treatment step. The problems in this type of preparation met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/24C07C67/08C07C67/56
Inventor 张富强
Owner TIANJIN CHEM REAGENT RES INST
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