Phenol ketone products

Plastic rubber

Current Location： Home > News > Chemical Knowledge > Production method and process flow of dimethylol butyric acid

[Chemical Knowledge]：Production method and process flow of dimethylol butyric acid

Read： 422 Time：19months ago Source：Transform the World with Simplicity

Dimethylolbutyric acid (DHMBA) is an important organic chemical raw material, widely used in medicine, pesticides, plastics, coatings and other fields. The following is the manufacturing method of dimethylol butyric acid:

1. raw material preparation

The main raw materials for manufacturing dimethylol butyric acid are succinic acid, formaldehyde and sodium hydroxide. Among them, succinic acid can be obtained by biological fermentation or chemical synthesis, formaldehyde and sodium hydroxide are common chemical raw materials.

2. reaction process

1. reaction of succinic acid and formaldehyde: add succinic acid and formaldehyde into the reactor according to a certain molar ratio, heat to a certain temperature, stir for a certain time, make succinic acid and formaldehyde fully react, generate dimethylol butyric acid monomer.

2. Neutralization reaction: Sodium hydroxide solution was added to the above reaction solution, and the pH value was adjusted to neutral, so that the generated dimethylolbutyric acid monomer was precipitated in the form of a salt.

3. Separation and purification: The precipitated dimethylol butyrate is recrystallized with ethanol or water to obtain a dimethylol butyric acid product with high purity.

3. Precautions

1. Control the reaction temperature and time: The reaction of succinic acid and formaldehyde requires a certain temperature and time, but avoid too high temperature and too long time to cause the decomposition of the product and the formation of by-products.

2. Adjust the pH value: During the neutralization reaction, an appropriate amount of sodium hydroxide solution needs to be added to adjust the pH value to neutral to ensure the formation and precipitation of dimethylol butyric acid.

3. Purification method selection: according to the specific situation to choose the appropriate purification method to ensure the purity and yield of the product.

In conclusion, the manufacturing method of dimethylolbutyric acid needs to control the reaction conditions, adjust the pH value and select the appropriate purification method to ensure the quality and yield of the product.

Previous： Production and manufacturing method and process flow of cuprous chloride

Next： The production and manufacturing method and process flow of adhesive.

News Categories