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Preparation method of antioxidant and anti-ageing agent of N-(4-anilinopenyl) benzamide

A technology of anilinophenyl, antioxidant antioxidant, applied in the field of antioxidant antioxidant, can solve the problems of low product purity, low efficiency of the preparation process, etc., and achieves the effects of high purity, small environmental damage, and avoiding excessive temperature

Inactive Publication Date: 2019-02-22
LIANYUNGANG REBO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is to overcome the deficiencies in the prior art, provide a kind of preparation method of antioxidant N-(4-anilinophenyl) benzamide, solve the problem of antioxidant N-(4) in the prior art -The problems of low efficiency and low product purity in the preparation process of anilinophenyl)benzamide

Method used

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  • Preparation method of antioxidant and anti-ageing agent of N-(4-anilinopenyl) benzamide
  • Preparation method of antioxidant and anti-ageing agent of N-(4-anilinopenyl) benzamide

Examples

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Effect test

Embodiment 1

[0036] A kind of preparation method of antioxidant N-(4-anilinophenyl) benzamide comprises the steps:

[0037] Step 1, the organic solvent, 4-aminodiphenylamine, sodium carbonate and benzoyl chloride are prepared in order of 80 parts, 35 parts, 15 parts and 30 parts according to the weight ratio, and they are ready for use;

[0038] Step 2. Add the organic solvent, 4-aminodiphenylamine and sodium carbonate prepared in step 1 into the reactor with stirrer in turn, stir and mix evenly, add benzoyl chloride dropwise in the atmosphere of protective gas, and the outlet of the protective gas device The end is liquid-sealed with an organic solvent, heated and stirred for reaction, the organic solvent is recovered by distillation under reduced pressure, and a solid is obtained for use;

[0039] Step 3, adding purified water to the solid in step 2 to disperse the crystallization of the solid, filtering and washing twice, drying and pulverizing to obtain N-(4-anilinophenyl)benzamide.

...

Embodiment 2

[0046] A kind of preparation method of antioxidant N-(4-anilinophenyl) benzamide comprises the steps:

[0047] Step 1, the organic solvent, 4-aminodiphenylamine, sodium carbonate and benzoyl chloride are prepared in order of 100 parts, 35 parts, 22 parts and 42 parts according to the weight ratio, and they are ready for use;

[0048] Step 2. Add the organic solvent, 4-aminodiphenylamine and sodium carbonate prepared in step 1 into the reactor with stirrer in turn, stir and mix evenly, add benzoyl chloride dropwise in the atmosphere of protective gas, and the outlet of the protective gas device The end is liquid-sealed with an organic solvent, heated and stirred for reaction, the organic solvent is recovered by distillation under reduced pressure, and a solid is obtained for use;

[0049] Step 3, adding purified water to the solid in step 2 to disperse the crystallization of the solid, filtering and washing with water for 3 times, drying and pulverizing to obtain N-(4-anilinophen...

Embodiment 3

[0056] A kind of preparation method of antioxidant N-(4-anilinophenyl) benzamide comprises the steps:

[0057] Step 1, preparing the organic solvent, 4-aminodiphenylamine, sodium carbonate and benzoyl chloride as 90 parts, 40 parts, 20 parts and 40 parts in sequence according to the weight ratio, for use;

[0058] Step 2. Add the organic solvent, 4-aminodiphenylamine and sodium carbonate prepared in step 1 into the reactor with stirrer in turn, stir and mix evenly, add benzoyl chloride dropwise in the atmosphere of protective gas, and the outlet of the protective gas device The end is liquid-sealed with an organic solvent, heated and stirred for reaction, the organic solvent is recovered by distillation under reduced pressure, and a solid is obtained for use;

[0059] Step 3, adding purified water to the solid in step 2 to disperse the crystallization of the solid, filtering and washing twice, drying and pulverizing to obtain N-(4-anilinophenyl)benzamide.

[0060] Specificall...

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Abstract

The invention relates to the technical field of antioxidant and anti-ageing agents, particularly to a preparation method of an antioxidant and anti-ageing agent of N-(4-anilinopenyl) benzamide. The method comprises the following steps of preparing organic solvent, 4-aminodiphenylamine, sodium carbonate and benzoyl chloride parts by weight, then sequentially feeding the organic solvent, the 4-aminodiphenylamine and the sodium carbonate into a reactor with a mixer for uniform mixing, in a protective inert gas atmosphere, dropwise adding in the benzoyl chloride for heated and mixed reaction, performing reduced pressure distillation to recover the organic solvent, adding purified water into solid to disperse solid crystal, and then performing filtering, washing, drying and crushing to obtain the product of N-(4-anilinopenyl) benzamide. The preparation method of the antioxidant and anti-ageing agent of the N-(4-anilinopenyl) benzamide solves the problems of low efficiency and product purityof an N-(4-anilinopenyl) benzamide preparation process. The preparation method of the antioxidant and anti-ageing agent of the N-(4-anilinopenyl) benzamide has the advantages of being simple in material acquisition, scientific and reasonable in technical process, recyclable in the solvent and low in damage to environment.

Description

technical field [0001] The invention relates to the technical field of antioxidant and antiaging agents, in particular to a preparation method of N-(4-anilinophenyl)benzamide, an antioxidant and antiaging agent. Background technique [0002] Rubber refers to a highly elastic polymer material with reversible deformation. It is elastic at room temperature, can produce large deformation under a small external force, and can return to its original shape after the external force is removed. Rubber is a completely amorphous polymer, its glass transition temperature (T g) is low, and its molecular weight is often very large, greater than hundreds of thousands. Early rubber was latex taken from plants such as rubber trees and rubber grasses, which were processed into materials with elasticity, insulation, impermeability to water and air. High elastic polymer compound. Divided into two kinds of natural rubber and synthetic rubber. Natural rubber is processed by extracting gum from...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C231/02C07C231/24C07C233/80
CPCC07C231/02C07C231/24C07C233/80
Inventor 何龙柏孙仙平
Owner LIANYUNGANG REBO CHEM CO LTD
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