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The manufacturing method
of propyl ethyl acrylate nitrile
1. Introduction
ethyl acrylate nitrile is an important chemical raw material, widely used in polymer materials, medicine, pesticides and other fields. This article will introduce the manufacturing method of propyl ethyl acrylate nitrile, including raw material preparation, reaction steps, post-treatment and so on.
2. Raw Material Preparation
The production of propyl ethyl acrylate nitrile requires the preparation of the following raw materials: acrylonitrile, ethyl acrylate, a catalyst, a polymerization inhibitor, and the like. The mass ratio of acrylonitrile to ethyl acrylate is 1 :( 1-2), the amount of catalyst is 0.1-1% of the total mass of acrylonitrile and ethyl acrylate, and the amount of inhibitor is 0.01-0.1 of the total mass of acrylonitrile and ethyl acrylate.
3. Reaction Step
The production of propyl ethyl acrylate nitrile adopts a copolymerization reaction method, and the specific steps are as follows:
1. mix acrylonitrile and ethyl acrylate according to a certain ratio and add them into a reaction kettle.
2. Add catalyst and inhibitor and stir well.
3. Heat the reaction kettle to control the reaction temperature between 60-120 ℃ and the reaction pressure between 0.1-1.0MPa.
4. During the reaction, the viscosity and acid value of the reaction solution need to be continuously monitored and adjusted as required.
5. After completion of the reaction, the reaction mixture was cooled to room temperature to obtain a crude product of ethyl propyl acrylate nitrile.
4. post-treatment
1. the crude product is filtered to remove impurities such as catalyst and inhibitor.
2. The filtered crude product was distilled and the fractions were collected to obtain ethyl propyl acrylate nitrile with high purity.
3. Quality inspection of products, packaging and warehousing after meeting the standards.
5. precautions
1. In the manufacturing process, it is necessary to strictly control the reaction temperature and pressure to ensure the safety and stability of the reaction.
2. It is necessary to carry out quality inspection on raw materials to ensure that the purity and quality of raw materials meet the requirements.
3. In the post-processing process, it is necessary to conduct sufficient quality inspection on the product to ensure that the quality and purity of the product meet the requirements.
6. conclusion
ethyl acrylate nitrile is an important raw material for chemical production. The manufacturing method mainly includes raw material preparation, reaction steps and post-treatment. In the manufacturing process, it is necessary to strictly control the reaction conditions and the quality of raw materials to ensure that the quality and purity of the product meet the requirements.