Method for synthesizing isopropyl fatty acid ester

The technology of isopropyl fatty acid ester and synthesis method is applied in the field of synthesis of ester compounds in organic chemistry, which can solve the problems of unsuitable application of isopropyl fatty acid ester and high toxicity of water-carrying agent, and achieve good product quality, equipment investment and energy efficiency. Energy saving and mild reaction conditions

Inactive Publication Date: 2008-08-06
王伟松
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water-carrying agent added is highly toxic, and it is n...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 336 parts of oleic acid and 439 parts of isopropanol by weight into the reaction kettle, add 2.33 parts of p-toluenesulfonic acid under stirring, gradually raise the temperature, under the reaction condition of temperature 85°C, reflux for 12 hours, and then transfer to the still , under the condition of nitrogen flow and the temperature of 90°C, the distillation reaction was carried out for 2 hours to remove isopropanol and the water generated by the reaction, and then cooled to 50°C. Neutralize to neutral with sodium carbonate solution, add 100 parts of water, stir and wash twice at 50°C, then dehydrate for 1 hour under the condition of vacuum degree of -0.090MPa~-0.095MPa and temperature of 95°C, and cool down to 50°C °C to obtain isopropyl oleate by filtration.

Embodiment 2

[0020] Add 229 parts of myristic acid and 488 parts of isopropanol by weight into the reaction kettle, add 2.87 parts of sulfamic acid under stirring, gradually raise the temperature, and reflux for 10 hours under the reaction conditions of a temperature of 80°C, and then transfer to the distillation kettle , under the conditions of nitrogen flow and temperature at 95°C, the distillation reaction was carried out for 2 hours to remove isopropanol and water generated by the reaction, and then cooled to 55°C. Neutralize to neutral with sodium carbonate solution, add 108 parts of water, stir and wash twice at 55°C, then dehydrate for 50 minutes under the condition of vacuum degree of -0.090MPa~-0.095MPa and temperature of 100°C, and cool down to 50°C ° C to filter isopropyl myristate.

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Abstract

A synthesis method of fatty acid isopropyl belongs to the ester compound synthesis technical field of organic chemistry, which uses fatty acid and isopropyl alcohol as raw materials. The invention is characterized in that in the presence of organic acid catalyst, the invention processes reflux reaction to give fatty acid isopropyl crude produce, distills abundant isopropyl alcohol, neutralizes via alkali, washes via water and dewaters in vacuum to prepare fatty acid isopropyl, wherein the organic catalyst is toluenesulfonic acid or sulfarnic acid which usage is 0.2-0.8% of the total weight of fatty acid and isopropyl alcohol, and the mol ratio between fatty acid and isopropyl alcohol is 1:4.0-10.0. The invention reasonably utilizes the reflux esterification reaction in the presence of organic acid catalyst, without toxic water carrying agent, but with simple process and less pollution, while the given isopropyl alcohol can be circulated to effectively reduce cost, with high product quality, high purity and wide application in cosmetic or the like.

Description

technical field [0001] The invention relates to a synthesis method of fatty acid isopropyl ester, belonging to the technical field of synthesis of ester compounds in organic chemistry. Background technique [0002] There are many varieties of fatty acid isopropyl esters, which are mainly used in cosmetics. Isopropyl oleate is a transparent oily liquid, which is miscible with animal and vegetable oils. Large dispersion coefficient, good spreadability, can form a thin layer of oil film on the skin, has skin care effect, is oily but not greasy to the skin, has antistatic property, and has good stability. It is used as an oily component of ointment, cream, and honey in cosmetics, which can make the dispersion effect of fillers and pigments better, and is an excellent oily solvent. Used in the series of hair products, because of its antistatic properties, the hair can be combed well and smooth, and it is beneficial to protect damaged hair. Isopropyl palmitate is a transparent ...

Claims

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Application Information

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IPC IPC(8): C07C69/003C07C67/08B01J31/04
Inventor 王伟松王新荣孟照平万庆梅
Owner 王伟松
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