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Preparation method for hydroxyethyl dual fatty acid amide

A technology of bis-fatty amide and hydroxyethyl ethylenediamine, which is applied in the field of preparation of hydroxyethyl bis-fatty amide, can solve problems such as the loss of ethylene diamine, achieve the effects of suppressing volatilization, improving utilization rate, and improving selectivity

Active Publication Date: 2012-10-24
常州可赛成功塑胶材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although nitrogen can take away part of the generated water, it is easy to cause a large loss of ethylenediamine

Method used

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  • Preparation method for hydroxyethyl dual fatty acid amide
  • Preparation method for hydroxyethyl dual fatty acid amide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 2 moles of hydroxystearic acid and 1 mole of hydroxyethylethylenediamine are passed into nitrogen under the composite antioxidant of sodium bisulfite and sodium borohydride, the composite catalyst of phosphoric acid, magnesium sulfate and calcium sulfate, the catalyst quality The fraction is 0.3% of the mass fraction of stearic acid. Heat to melt the hydroxystearic acid. When the temperature rises to 80°C, start to add hydroxyethylethylenediamine dropwise, and control the rate of addition so that it is dripped within 0.5 hours. After dripping, quickly raise the temperature to 220°C, react for 2 hours, and complete the high-temperature reaction and dehydration procedure; finally, let the temperature of the material drop to 100°C and discharge, and the finished product has an amine value of ≤5mgKOH / g and an acid value of ≤10mgKOH / g. Using this process for reaction, the yield of the obtained hydroxyethyl bis fatty acid amide is 97%, the color is white, and the melting point...

Embodiment 2

[0040] 2 moles of hydroxystearic acid and 1.1 moles of hydroxyethylethylenediamine are passed into nitrogen under the composite antioxidant of sodium bisulfite and sodium borohydride, the composite catalyst of phosphoric acid, magnesium sulfate and calcium sulfate, the catalyst quality The fraction is 0.4% of the mass fraction of stearic acid. Heat to melt the hydroxystearic acid. When the temperature rises to 90°C, start to add hydroxyethylethylenediamine dropwise, and control the rate of addition so that it is dripped within 0.5 hours. After dropping, the temperature was raised rapidly to 230°C. React for 3 hours to complete the high-temperature reaction and dehydration procedure; finally let the temperature of the material drop to 80°C and discharge to produce a finished product with an amine value of ≤5mgKOH / g and an acid value of ≤10mgKOH / g. Using this process for reaction, the yield of the obtained hydroxyethyl bis fatty acid amide is 97%, the color is white, and the mel...

Embodiment 3

[0042] 2 moles of hydroxystearic acid and 1.2 moles of hydroxyethylethylenediamine are fed into nitrogen under the composite antioxidant of sodium bisulfite and sodium borohydride, the composite catalyst of phosphoric acid, magnesium sulfate and calcium sulfate, the catalyst quality The fraction is 0.3% of the mass fraction of stearic acid. Heat to melt the hydroxystearic acid. When the temperature rises to 100°C, start to add hydroxyethylethylenediamine dropwise, and control the rate of addition so that it is dripped within 0.5 hours. After dripping, the temperature is raised rapidly to 240°C. React for 2.5 hours to complete the high-temperature reaction and dehydration procedure; finally let the temperature of the material drop to 100°C and discharge to produce a finished product with an amine value of ≤5mgKOH / g and an acid value of ≤10mgKOH / g. Using this process for reaction, the yield of the obtained hydroxyethyl bis fatty acid amide is 97%, the color is white, and the melt...

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Abstract

The invention discloses a preparation method for hydroxyethyl dual fatty acid amide. The method specifically includes steps: (1) salification reaction: reacting hydroxy higher fatty acid with hydroxyethyl ethylenediamine under the protection of nitrogen, heating a complex antioxidant of sodium bisulfite and sodium borohydride and a complex catalyst of phosphoric acid, magnesium sulfate and calcium sulfate for salification reaction; (2) dehydration reaction: increasing temperature for continuing reaction after adding hydroxyethyl ethylenediamine for reaction; and (3) enabling the temperature of materials to be decreased to 80 DEG C to 100 DEG C, the amine value to be less than or equal to 5 mgKOH / g and the acid value to be less than or equal to 10 mgKOH / g for discharging to obtain the hydroxyethyl dual fatty acid amide. The sodium bisulfite and the sodium borohydride are taken as the complex antioxidant during the reaction process and the process conditions are adopted, so that products are colory and have low melting point.

Description

Technical field: [0001] The invention relates to a preparation method of hydroxyethyl bis fatty acid amide. Background technique: [0002] Hydroxyethyl bis fatty acid amide (HEEBF) is a hard and brittle white substance with a low melting point, insoluble in water, insoluble in most solvents such as methanol, ethanol, acetone, carbon tetrachloride, etc. Stable, soluble in hot chlorinated hydrocarbons and aromatic hydrocarbons. HEEBF is harmless to the human body and organisms, so it can be used as food packaging materials, auxiliary agents, additives, etc. In the molecular structure of HEEBF, the two sections are non-polar long-chain alkyl groups, and the middle is a polar bisamide group, which makes it have the advantages of lubricity and anti-adhesiveness. It is also compatible with many synthetic resins such as ABS resin, polyvinyl chloride, The good compatibility of phenolic resin and polystyrene makes it a multifunctional processing aid. At the same time, the introduct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C235/10C07C231/02
Inventor 胡贵安
Owner 常州可赛成功塑胶材料有限公司
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