Production method of antioxidant 1010

Abstract

The invention provides a synthesis method of an antioxidant 1010. The synthesis method comprises following steps: feeding raw materials into a kettle, filling nitrogen into the kettle, after 0.5 hour,raising the temperature, after materials are fully melted, starting stirring, controlling the reaction temperature, maintaining the nitrogen flow speed during the reaction process, bringing generatedmethanol into a condenser by the nitrogen flow, recovering condensed methanol, after 10 hours, stopping the reactions to obtain an antioxidant 1010 crude product, washing, and carrying out crystallization to obtain the antioxidant 1010. On the basis of a normal pressure antioxidant 1010 production method, magnesium silicate is added into the reaction system to avoid the situation that the nitrogen is not completely reacted, the product is oxidized and colored, the esterification reactions are complete, the product quality is improved, the yield is increased, thus the cost is reduced, and theproduct is competitive in the market.

Description

technical field [0001] The invention relates to the field of organic synthesis, and relates to a production method of antioxidant 1010. Background technique [0002] Most industrial organic materials such as plastics, rubber, fibers, adhesives, food and feed have the property of reacting with oxygen. After the reaction, the substance partially changes its original properties, and the oxidation phenomenon will cause the polymer to fade, lose weight, lose transparency and surface cracking, etc., and at the same time lose its mechanical properties. There are many methods to prevent the oxidation of organic matter in industry, including polymer structure modification, obtaining physical stability through polymer orientation, and adding antioxidants. Among them, adding antioxidants is the easiest and most effective method. [0003] Antioxidants can delay or prevent the oxidation or automatic oxidation process of synthetic materials, thereby prolonging the service life of materi...

AI Technical Summary

Problems solved by technology

But the disadvantages are: in the process of transesterification reaction, a higher degree of vacuum is required to timely separate the by-product decane cooled to 10°C, and the system is in a strictly sealed state. Once the degree of vacuum is insufficient or oxygen enters It will seriously affect the yield and color of the product, and there is no solvent in the reaction system, the viscosity of the transesterification reaction system is relatively large, and it is difficult to form a homogeneous system. Higher temperature and strong mechanical stirring must be used, which will give a negative impact on production. Increased energy consumption, and because of the high reaction temperature, side reactions increase, resulting in low purity of the crude product, which also increases production costs