The Production Process of Imidazolidinyl urea

Imidazolidinyl urea is a widely used chemical intermediate in the production of various polymers, coatings, and other products in the chemical industry.
The production process of imidazolidinyl urea involves several steps, which are outlined below.

1. Preparation of the Starting Materials

The production of imidazolidinyl urea begins with the preparation of the starting materials, which are typically m-xylylenediamine and formaldehyde.
m-XYlylenediamine is prepared by a series of chemical reactions involving the nitration of toluene, followed by condensation and reduction.
Formaldehyde is prepared by the catalytic reaction of methanol with air or by the oxidation of methyl alcohol.

2. Condensation Reaction

The next step in the production of imidazolidinyl urea is the condensation reaction between m-xylylenediamine and formaldehyde.
This reaction is usually carried out in the presence of a catalyst, such as sodium hydroxide or para-toluenesulphonic acid, and at a high temperature and pressure.
The reaction produces a mixture of imidazolidinyl urea and other by-products, which are then separated from the reaction mixture.

3. Hydrolysis

The next step in the production of imidazolidinyl urea is hydrolysis, which involves the removal of the by-products from the condensation reaction.
This is typically done using water and a catalyst, such as sodium hydroxide or hydrochloric acid.
The hydrolysis reaction produces a purified solution of imidazolidinyl urea, which is then concentrated to remove excess water.

4. Crystallization

The final step in the production of imidazolidinyl urea is crystallization, which involves the separation of the imidazolidinyl urea crystals from the solution.
This is typically done by cooling the solution to a low temperature and adding a crystallization agent, such as sodium chloride or sulphuric acid.
The crystals of imidazolidinyl urea are then collected and dried, resulting in a pure form of the product.

5. Purification

The imidazolidinyl urea produced in the previous steps may still contain impurities, such as other diamines or formaldehyde.
To remove these impurities, the imidazolidinyl urea is typically purified using chromatography or distillation.
These purification steps ensure that the final product meets the required purity and quality standards.

In conclusion, the production process of imidazolidinyl urea involves several steps, including the preparation of the starting materials, condensation reaction, hydrolysis, crystallization, and purification.
These steps are carried out in a well-controlled environment to ensure the quality and purity of the final product.
Imidazolidinyl urea is a valuable intermediate in the production of various chemicals and products in the chemical industry.