N, N'-alkylene bis(saturated fatty amide) and synthesis method thereof

A synthesis method and fatty amide technology are applied in the field of N,Nˊ-alkylene bis-saturated fatty amides and their synthesis, and can solve the problem of yellowing in color, difficulty in controlling the color value index of N,Nˊ-alkylene bis-saturated fatty amides, etc. problems, to achieve simple and mild reaction conditions, reduce the price of raw materials, and achieve the effect of recycling

Active Publication Date: 2015-06-24
FENGYI FINE CHEM LIANYUNGANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention aims to provide a kind of N,N'-alkylene disaturated fatty acid amide and its synthesis method to solve the problem that the color index of N,N'-alkylene disaturated fatty acid amide synthesized in the prior art is difficult to control and the color is common Yellowing Technical Issues

Method used

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  • N, N'-alkylene bis(saturated fatty amide) and synthesis method thereof
  • N, N'-alkylene bis(saturated fatty amide) and synthesis method thereof

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preparation example Construction

[0030] The above-mentioned N,N'-alkylene bissaturated fatty acid amide synthesis method provided by the present invention can realize the improvement of N,N'-alkylene disaturated fatty acid amide as long as at least one of solid Lewis acids such as silica gel, molecular sieves, aluminum oxide or boric acid is used as a catalyst. The effect of double saturated fatty acid amide color index, in a preferred embodiment of the present invention, this synthetic method comprises the following steps:

[0031] (1) Mix the saturated fatty acid lower alcohol ester and the solid Lewis acid, and heat up under the protection of an inert gas until the saturated fatty acid lower alcohol ester is completely melted, then stir to form a mixture A; preferably, in step (1) Moderate heating to 45-100°C, preferably 55-80°C, particularly preferably 65-75°C.

[0032] (2) Under the protection of an inert gas, heat the mixture A to the first temperature, add alkyleneamine to it, and carry out the first h...

Embodiment 1

[0056] Put 107g (0.36mol) of methyl stearate raw material, 0.11g of silica gel (Sinopharm Chemical Reagent Co., Ltd., 300-400 mesh) and 0.04g of SONOX215 antioxidant into the tank of the reactor; exhaust the inside of the reactor with a vacuum pump Gas, and replaced with inert gas, repeat this at least three times, under the continuous feeding of inert gas, heat up to 75 ° C, after the methyl stearate raw material is melted; under the condition of stirring, the material in the reactor is heated up After reaching 150°C, add 5.37g of ethylenediamine (0.09mol) dropwise to the reactor for 1 hour. After the drop of ethylenediamine is completed, perform the first heat preservation reaction at 150°C for 1 hour; after the heat preservation is completed, continue to raise the temperature to 180°C, after the second heat preservation reaction for 6 hours, filter while it is hot, and recover the catalyst; then recover the excess methyl stearate raw material by vacuum distillation, keep the...

Embodiment 2

[0058] The specific operation method is the same as in Example 1, the difference is that the catalyst used is boric acid (Example 2-1), activated alumina (Sinopharm Chemical Reagent Co., Ltd.) (Example 2-2), and HY type molecular sieve (Nankai University Catalyst plant) (Example 2-3).

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Abstract

The invention discloses N, N'-alkylene bis(saturated fatty amide) and a synthesis method thereof. Saturated fatty acid short chain alcohol ester and alkylene amine as raw materials undergo a reaction in the presence of solid Lewis acid as a catalyst to produce the N, N'-alkylene bis(saturated fatty amide). Through use of the saturated fatty acid short chain alcohol ester as a raw material for synthesis of the alkylene bis(saturated fatty amide), raw material reaction activity is improved, a raw material cost is reduced and a cost is saved. Through use of the solid Lewis acid as a catalyst, an amine value and an acid value of the N, N'-alkylene bis(saturated fatty amide) can be adjusted and are obviously lower than those of a N, N'-alkylene bis(saturated fatty amide) synthesized by other catalysts so that the technical problem that color value index of the N, N'-alkylene bis(saturated fatty amide) can be controlled difficultly and the color is yellow is solved, product quality can be improved and product color and luster are improved.

Description

technical field [0001] The invention relates to the field of organic synthesis, in particular to an N,N′-alkylene bissaturated fatty amide and a synthesis method thereof. Background technique [0002] Alkylene bis fatty acid amide, especially N,N'-ethylene bis stearamide (N,N'-ethylene bis stearamide, referred to as EBS) is a representative product of fatty amide compounds, and its commercial appearance is white to light yellow Granular or powder, because of the presence of polar amide groups and two non-polar hydrophobic fatty long carbon chains in its structure, it shows a certain surface activity, which is endowed with excellent lubricating, mold release and anti-sticking properties. It is used in ABS, It is widely used in the processing of thermoplastics such as PVC, rubber, coatings and chemical fiber products. [0003] Domestic and foreign manufacturers generally use the fatty acid method to synthesize N,N'-ethylene bis-stearamide, that is, stearic acid and ethylenedi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C233/36C07C231/02
Inventor 韩福彬韩勇顾立新李保国
Owner FENGYI FINE CHEM LIANYUNGANG
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