Manufacturing method of octyl acrylate
Octyl acrylate is an important organic chemical raw material, which is widely used in coatings, plastics, rubber, fibers and other fields. This article will introduce the manufacturing method of octyl acrylate, including raw material preparation, reaction process, post-treatment and so on.
I. Raw material preparation
The main raw materials for manufacturing octyl acrylate include acrylic acid, octanol and catalyst. Among them, acrylic acid can be used commercially available acrylic acid raw materials, octanol can be used industrial grade octanol. The catalyst generally adopts acid catalyst such as sulfuric acid or p-toluenesulfonic acid.
II. Reaction process
1. Esterification reaction
Acrylic acid and octanol are added to the reaction kettle according to a certain molar ratio, and the catalyst is added to start the heating and temperature rise. In the reaction process, it is necessary to control a certain temperature and pressure, while constantly stirring to promote the reaction. The octyl acrylate and water generated from the esterification reaction need to be separated in time to avoid affecting the progress of the reaction.
2. Dehydration reaction
Since the water generated from the esterification reaction will affect the progress of the reaction, dehydration reaction is needed. Generally, molecular sieve or desiccant such as magnesium sulfate is used for dehydration to ensure the smooth progress of the reaction.
3. Refining process
After the reaction is finished, refining treatment is needed to remove the impurities and by-products in it. Generally, the method of distillation is used for refining, which can get the product of octyl acrylate with higher purity.
Three, post-processing
The finished manufacturing of octyl acrylate needs to be stored and packaged to ensure the quality and stability of the product. During the storage process, attention needs to be paid to avoid direct sunlight and high temperature environment, while maintaining the sealing of the storage container to prevent product deterioration and contamination.
In short, the manufacturing process of octyl acrylate needs to pay attention to the preparation of raw materials, the control of the reaction process and post-processing to ensure the quality and yield of the product. Meanwhile, relevant safety production norms and environmental protection requirements need to be strictly observed to ensure the safety and sustainability of production.
