The Production Process of Guanidine, N-cyano-N′-4-pyridinyl-N′′-(1,2,2-trimethylpropyl)-, hydrate (1:1)

The production of guanidine, N-cyano-N′-4-pyridinyl-N′′-(1,2,2-trimethylpropyl)-, hydrate (1:1), also known as DMF guanidine, is an important process in the chemical industry.
This compound is commonly used as a catalyst in the production of various chemicals, such as polyurethanes, polyesters, and unsaturated polyester resins.
The production process of DMF guanidine involves several steps, including the preparation of the starting materials, the reaction itself, and the purification and isolation of the final product.

The preparation of the starting materials is the first step in the production process.
The raw materials required for the production of DMF guanidine are guanidine carbonate, formaldehyde, and dimethylformamide (DMF).
The guanidine carbonate is prepared by heating a mixture of guanidine hydrochloride and sodium carbonate at a temperature of around 150°C.
The formaldehyde is prepared by the gas-phase process, while the DMF is prepared by the traditional method, which involves the reaction of dimethyl sulfate with sodium hydroxide.

The next step in the production process is the reaction between the guanidine carbonate, formaldehyde, and DMF.
This reaction is exothermic, meaning that it releases a significant amount of heat, and it is typically carried out in a stainless steel reactor, which is equipped with a stirring system and a condenser to remove any excess heat.
The reaction is typically carried out at a temperature of around 150°C and a pressure of around 20 bars.
The reaction can take several hours to complete, depending on the scale of the production.

After the reaction is complete, the resulting product is a solution of DMF guanidine in DMF.
This solution is then purified and isolated by several methods, including precipitation, crystallization, and filtration.
The purified DMF guanidine is then dried and milled to a fine powder, which is then sieved to remove any impurities.
The final product is then packaged and shipped to customers.

In conclusion, the production of DMF guanidine is a complex process that involves several steps, including the preparation of the starting materials, the reaction itself, and the purification and isolation of the final product.
The production process of DMF guanidine is a highly optimized process that is designed to produce high-quality product with consistent properties.
With the right equipment and processes, the production of DMF guanidine is a safe and efficient process that can be carried out in an environmentally friendly manner.