Production process of methyl methacrylate

Methyl methacrylate (MMA) is an important organic chemical product widely used in industries such as coatings, adhesives, and plastics. This article will introduce the production process of methyl methacrylate.
1、 The main raw materials for preparing methyl methacrylate are formic acid and methyl acrylate. Firstly, it is necessary to ensure the purity and quality of the raw materials to guarantee the quality of the final product.
2、 The production of methyl methacrylate through esterification reaction is mainly achieved. The specific steps are as follows: 1 Add formic acid and methyl acrylate in a certain molar ratio into the reaction vessel. two Adding catalysts, commonly used catalysts include sulfuric acid, hydrochloric acid, etc. three Control the reaction temperature and reaction time, usually carried out at 70-90 degrees Celsius for 2-4 hours. four Continuously stir the reactants during the reaction process to increase reaction efficiency. five After the reaction is complete, methyl methacrylate is separated from the reactants by distillation.
3、 Due to the possible impurities and pigments in the raw materials of formic acid and methyl acrylate, decolorization treatment is required. Generally, activated carbon adsorption method is used to mix and stir methyl methacrylate with activated carbon, and filter it to adsorb impurities and pigments on the activated carbon, thus obtaining methyl methacrylate with lighter pigments.

4、 The methyl methacrylate after distillation separation and decolorization is separated and purified by a distillation device. The purpose of distillation is to remove impurities and impure substances from it, and obtain high-purity methyl methacrylate.
5、 The methyl methacrylate obtained from post-processing can be processed according to different purposes. Common post-processing methods include polymerization reaction, ester exchange, etc. Through these treatments, different derivatives of methyl methacrylate can be obtained to meet the needs of different industrial fields.
6、 Methyl methacrylate, as an important organic chemical product, is widely used in industries such as coatings, adhesives, plastics, etc. In terms of coatings, methyl methacrylate can be used as a solvent, resin, plasticizer, etc., with good transparency and weather resistance. In terms of adhesives, methyl methacrylate can be used as an adhesive with high strength and bonding properties. In terms of plastics, methyl methacrylate can be used to prepare transparent and weather resistant polymethyl methacrylate (PMMA), which is widely used in fields such as construction and optics.
Summary: The production process of methyl methacrylate mainly includes steps such as raw material preparation, esterification reaction, decolorization treatment, distillation separation, and post-processing. Through these steps, high-purity methyl methacrylate can be obtained and processed according to different needs to meet the application requirements of different industries. Methyl methacrylate, as an important organic chemical product, has broad application prospects in industries such as coatings, adhesives, and plastics.