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Method for synthesizing fatty acid diethanol amide

A technology of fatty acid diethanolamide and synthesis method, which is applied in the preparation of carboxylic acid amide, chemical instruments and methods, preparation of organic compounds, etc. The yield is only about 70%, etc., to achieve the effect of significant emulsifying ability, good synergistic effect, and significant thickening performance

Inactive Publication Date: 2017-11-24
钟千里
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most traditional fatty acid diethanolamide products use coconut oil or palm oil as raw materials, but coconut oil and palm oil fluctuate greatly due to international influences, and the prices of coconut oil and palm oil continue to rise, so coconut oil or palm oil is used to prepare fatty acid diethyl alcohol Ethanolamide is more expensive
In addition, most manufacturers currently use refined oil and diethanolamine to directly react one-step fatty acid diethanolamide to synthesize fatty acid diethanolamide. The yield of fatty acid diethanolamide in this method is only about 70%, so it lacks competitiveness in the international market

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of synthetic method of fatty acid diethanolamide, comprises the following steps:

[0022] (1) Take soybean oil, lanolin, rice bran oil and lacquer wax according to the mass ratio of 3:1:2:1;

[0023] (2) Mix the soybean oil, lanolin, rice bran oil and lacquer wax obtained by the above weighing, and stir for 25min at a rotating speed of 100r / min to obtain mixed oil; (3) weigh mixed oil and Diethanolamine;

[0024] (4) Heat the mixed grease oil bath prepared above to 130°C, add a part of diethanolamine, stir at a speed of 80r / min for 30min, and perform vacuum distillation and dehydration reaction until the acid value of the system no longer decreases;

[0025] (5) After cooling down to 85°C, add sodium methoxide and the remaining diethanolamine, stir at a speed of 50r / min for 15min, condense and reflux at a constant temperature until the amine value no longer changes, and obtain a viscous liquid, which is the required fatty acid diethylamine. ethanolamide.

[00...

Embodiment 2

[0030] A kind of synthetic method of fatty acid diethanolamide, comprises the following steps:

[0031] (1) Take soybean oil, lanolin, rice bran oil and lacquer wax according to the mass ratio of 4:2:3:1.5;

[0032] (2) Mix the soybean oil, lanolin, rice bran oil and lacquer wax obtained by the above weighing, and stir for 20 minutes at a rotating speed of 120r / min to obtain the mixed oil; (3) weigh the mixed oil and Diethanolamine;

[0033] (4) Heat the mixed grease oil bath prepared above to 135° C., add a part of diethanolamine, stir at a speed of 100 r / min for 25 minutes, and perform vacuum distillation and dehydration reaction until the acid value of the system no longer decreases;

[0034] (5) After cooling down to 90°C, add sodium methoxide and the remaining diethanolamine, stir at a speed of 80r / min for 12min, condense and reflux at a constant temperature until the amine value no longer changes, and obtain a viscous liquid, which is the required fatty acid diethylamin...

Embodiment 3

[0039] A kind of synthetic method of fatty acid diethanolamide, comprises the following steps:

[0040] (1) Take soybean oil, lanolin, rice bran oil and lacquer wax according to the mass ratio of 5:3:4:2;

[0041] (2) Mix the soybean oil, lanolin, rice bran oil and lacquer wax obtained by the above weighing, and stir for 15 minutes at a rotating speed of 150r / min to obtain the mixed oil; (3) weigh the mixed oil and Diethanolamine;

[0042] (4) Heat the mixed grease oil bath prepared above to 140°C, add a part of diethanolamine, stir at a speed of 120r / min for 20min, and conduct vacuum distillation and dehydration reaction until the acid value of the system no longer decreases;

[0043] (5) After cooling down to 95°C, add sodium methoxide and the remaining diethanolamine, stir at a speed of 100r / min for 10min, condense and reflux at a constant temperature until the amine value no longer changes, and obtain a viscous liquid, which is the required fatty acid diethylamine. ethan...

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Abstract

The invention discloses a method for synthesizing fatty acid diethanol amide. According to the method, mixed grease consisting of soybean oil, wool fat, rice bran oil and urushi tallow, and diethanol amine are adopted as raw materials, sodium methylate is adopted as a catalyst, and fatty acid diethanol amide is prepared through two steps of synthesis of reduced pressure distillation dehydration and ester aminolysis. The problem that the yield of fatty acid diethanol amide is low when a conventional one-step synthesis method is used is overcome, the yield of the fatty acid diethanol amide can be up to 88% or greater, and the production cost of the fatty acid diethanol amide is reduced as palm oil and coconut oil which are relatively high in price are replaced by the mixed grease consisting of soybean oil, wool fat, rice bran oil and urushi tallow. Compared with a conventional product, the fatty acid diethanol amide is remarkable in thickening property, remarkable in emulsion property, good in compounding property and synergetic effect with other surfactants, furthermore good in property such as electrostatic resistance, rusting resistance and corrosion resistance, and in addition is simple and harmless in process, low in material cost and easy in industrial production.

Description

technical field [0001] The invention relates to a method for synthesizing fatty acid diethanolamide, which belongs to the technical field of synthesis of amide compounds in organic chemistry. Background technique [0002] Fatty acid diethanolamide is a kind of surfactant with excellent dispersing, solubilizing and thickening properties. Besides being used as daily detergent, emulsifier and thickener of cosmetics, it can also be used as fabric softener, metal Cleaning agent, antirust agent and antistatic agent are also intermediates for the preparation of leather fatliquor, and have a wide range of applications. [0003] At present, most traditional fatty acid diethanolamide products use coconut oil or palm oil as raw materials, but coconut oil and palm oil fluctuate greatly due to international influences, and the prices of coconut oil and palm oil continue to rise, so coconut oil or palm oil is used to prepare fatty acid diethyl alcohol Ethanolamide is more expensive. In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C231/02C07C233/17C07C233/18C07C233/20B01F17/22B01F17/38C09K23/22C09K23/38
CPCC07C231/02C09K23/00
Inventor 钟千里
Owner 钟千里
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