Composition of N-4(anilinophenyl)maleimide and preparation method thereof

An anilinophenyl, maleimide technology, applied in the composition and preparation, the reactive type does not draw out the antioxidant, the composition and preparation field of N-4 maleimide, can solve the complex production method, The problems of large environmental pollution and high product cost can achieve the effects of simple method, prolonged scorch time, and reduced toxicity and pollution.

Inactive Publication Date: 2012-11-14
咸阳三精科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Purpose of the present invention is exactly in order to solve the many components of existing N-4 (anilinophenyl) maleimide, complicated production method, large energy consumption; Product cost is very high, and production process is big to environmental pollution, thereby provides a kind of new technical solutions

Method used

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  • Composition of N-4(anilinophenyl)maleimide and preparation method thereof
  • Composition of N-4(anilinophenyl)maleimide and preparation method thereof
  • Composition of N-4(anilinophenyl)maleimide and preparation method thereof

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Effect test

Embodiment 1

[0029] The raw material composition used and the proportioning by weight are:

[0030] 100 g of acetone, 30 g of tetraaminodiphenylamine, 50 g of maleic anhydride, and 30 g of acetic anhydride.

[0031] Add 30g of tetraaminodiphenylamine into a 500ml three-necked flask, fix the three-necked flask, install the stirrer and thermometer, then add 100g of acetone solvent, stir to completely dissolve the tetraaminodiphenylamine, then add 50g of maleic anhydride dropwise, At this time, it is an exothermic reaction and attention should be paid to cooling down. The temperature is controlled at about 20°C. After the dropwise addition is completed, it is kept at 50°C for 2 hours, then 30g of acetic anhydride is added and kept at 25-30°C for 3 hours. After the reaction is completed, the acetone is recovered by evaporation. Finally, the coarse product is obtained by centrifugal washing, and the finished product is dried and pulverized. Weighing 56g, taking tetraaminodiphenylamine as a st...

Embodiment 2

[0043] The raw material composition used and the proportioning by weight are:

[0044] 200g of acetone, 60g of tetraaminodiphenylamine, 100g of maleic anhydride, and 60 parts of acetic anhydride.

[0045] Add 60g of tetraaminodiphenylamine and 100g of maleic anhydride to a 1000ml three-necked flask, fix the three-necked flask, install the stirrer and thermometer, then add 200g of acetone, stir to completely dissolve the maleic anhydride, and then add 100g dropwise For maleic anhydride, it is an exothermic reaction at this time. Pay attention to lowering the temperature. The temperature is controlled at about 20°C. After the dropwise addition is completed, keep it at 55°C for 2 hours, then add 60g of acetic anhydride and keep it at 25-30°C for 3 hours. After that, the reaction is complete. Evaporation and recovery of acetone. Finally, the coarse product is obtained by centrifugal washing, and the finished product is dried and pulverized. Weighing 113g, taking tetraaminodiphen...

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Abstract

Belonging to the technical field of chemical product manufacturing, the invention relates to a composition of N-4(anilinophenyl)maleimide and a preparation method thereof. Technically, the composition is mainly characterized by consisting of the following raw materials of: 40-60 parts of a solvent, 15-25 parts of tetraaminodiphenylamine, 20-40 parts of maleic anhydride, and 20-40 parts of acetic anhydride. The preparation method consists of: first adding the tetraaminodiphenylamine into a reaction kettle equipped with a stirrer and a thermometer, then adding the solvent, conducting mixing to make the tetraaminodiphenylamine fully dissolved, and adding maleic anhydride, then carrying out heat preservation for 2 hours, adding acetic anhydride, and after the end of reaction, performing evaporation to recover the solvent acetone, and implementing centrifugal washing, drying and crushing so as to obtain a finished product. The product obtained in the invention is mainly used in natural rubber and various synthetic rubber, and is a reactive non-extractable antioxidant having high stability in oil-proof heat-resistant oxidation.

Description

1. Technical field [0001] The invention relates to a production method of a reactive non-extractable anti-aging agent, specifically a composition and a preparation method of N-4 (anilinophenyl) maleimide, belonging to the technical field of chemical product manufacture. Compositions and methods of preparation are included. 2. Background technology [0002] At present, the domestic production of this product uses acetic anhydride as a solvent, and the process is divided into two steps. The pollution is large, the process is multi-process and the loss of raw materials and finished products is large. However, the boiling point of acetic anhydride is high, the energy consumption during recovery is large, and the recovery rate is very low. Moreover, there are no good reactive anti-aging additives in China that can meet the actual production needs. They only rely on expensive imported products, and imported similar products are not entirely reactive anti-aging agents, and the supp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D207/452C08K5/3415C08L7/00C08L21/00
Inventor 赵宁娟
Owner 咸阳三精科技股份有限公司
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