Method for improving quality of diphenylguanidine product
A technology of product quality and diphenylguanidine, applied in the field of diphenylguanidine production, can solve the problems of yellowish color and low purity, and achieve the effects of simple steps, high purity and convenient operation
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Embodiment 1
[0012] Put 700g of ammonia water into the oxidation kettle, the concentration of ammonia water is 16%, grind 100g of diphenylthiourea after sieving, start stirring, and after beating for 30min, heat the material to 60°C, and feed oxygen into the oxidation kettle. When the end point is reached, the oxygen supply is stopped, and the finished product of the accelerator diphenylguanidine is obtained through washing with water and drying. The accelerator diphenylguanidine has a white appearance and a purity of 98.0%.
Embodiment 2
[0014] Put 800g of ammonia water into the oxidation kettle, the concentration of ammonia water is 18%, grind 100g of diphenylthiourea after sieving, start stirring, after beating for 30min, heat the material to 70°C, and pass oxygen into the oxidation kettle, when the reaction When the end point is reached, the oxygen supply is stopped, and the finished product of the accelerator diphenylguanidine is obtained through washing with water and drying. The accelerator diphenylguanidine has a white appearance and a purity of 98.6%.
Embodiment 3
[0016] Put 900g of ammonia water into the oxidation kettle, the concentration of ammonia water is 20%, grind 100g of diphenylthiourea after sieving, start stirring, and after beating for 30min, heat the material to 80°C, and pass oxygen into the oxidation kettle. When the end point is reached, the oxygen supply is stopped, and the finished product of the accelerator diphenylguanidine is obtained through washing with water and drying. The accelerator diphenylguanidine has a white appearance and a purity of 99.0%.
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