Current Location： Home > News > Chemical Knowledge > Production method and process of butyl acrylate nitrile

[Chemical Knowledge]：Production method and process of butyl acrylate nitrile

Read： 880 Time：14months ago Source：Transform the World with Simplicity

Butyl Acrylate Butyronitrile (BABN) is an important chemical raw material, widely used in synthetic rubber, plastics, coatings and other fields. This paper will introduce the manufacturing method of butyl acrylate nitrile, including raw material preparation, reaction process, post-treatment and so on.

1. Raw Material Preparation

The main raw materials for the manufacture of butyl butyl acrylate nitrile include butene, acrylonitrile and acrylic acid. Among them, butene acts as an alkylating agent, acrylonitrile provides a cyano group, and acrylic acid provides a carboxyl group. In order to ensure the smooth progress of the reaction, it is also necessary to prepare a certain catalyst and solvent.

2. Reaction Process

The manufacture of butyl butyl acrylate nitrile is mainly achieved by alkylation reactions. The specific steps are as follows:

1. mixing acrylic acid and acrylonitrile according to a certain proportion, adding a catalyst, heating and stirring for pre-reaction. The purpose of the pre-reaction is to bring the acrylic acid and acrylonitrile into contact sufficiently to increase the rate of the subsequent alkylation reaction.
2. The pre-reaction mixture is cooled, butene and solvent are added, and the alkylation reaction is carried out by heating and stirring again. During the alkylation reaction, butene and acrylonitrile undergo electrophilic substitution reaction to produce butyl butyl acrylate nitrile.
3. The reaction temperature and time were controlled to ensure the formation of butyl butyl acrylate nitrile. At the same time, the progress of the reaction is monitored by titration or chromatography in order to adjust the reaction conditions in time.

3. post-treatment
After the
reaction is completed, the product needs to be post-treated to obtain butyl acrylate nitrile with high purity. The specific steps are as follows:

1. the reaction mixture is cooled, and unreacted raw materials and solvent are separated by distillation or extraction to obtain a crude product.
2. The crude product is refined, usually by distillation, crystallization, filtration and other methods to remove impurities and improve product purity.
3. Quality inspection of refined products to ensure that the products meet relevant standards.

4. precautions

1. In the entire manufacturing process, it is necessary to strictly control the reaction temperature and time to avoid the occurrence of side reactions and improve the selectivity of the product.
2. The choice and use of catalyst have an important influence on the reaction rate and product selectivity, so it is necessary to choose the appropriate catalyst according to the actual situation.
3. In the process of post-treatment, it is necessary to ensure that the product quality meets the relevant standards to avoid harm to the environment and human health.

In short, the manufacture of butyl acrylate nitrile requires mastering the relevant chemical reaction principles and manufacturing processes, and strictly controlling the reaction conditions and post-treatment processes to obtain high-quality products. At the same time, it is necessary to strengthen the safety management and environmental protection measures in the production process to ensure the smooth progress of the production process.

Previous： Production and manufacturing method and process flow of propyl butyl acrylate nitrile

Next： Specification for storage and transport of polyurethane

News Categories