Abstract
p-Toluenesulfonyl semicarbazide used as blowing agents in polypropylene processing was synthesized recurring to three-step reactions. In the first step, adding a certain amount of salts in the preparation of p-toluenesulfochloride from toluene and chlorosulfonic acid has a favorable effect on improving yield of p-Toluenesulfonyl chloride. In the second step, the yield of p-toluene sulfonhydrazide using tetrahydrofuran as solvent is higher than that of using benzene as solvent. The reaction temperature has obviously effect on the yield of p-Toluenesulfonyl Semicarbazide.
| Original language | English |
|---|---|
| Pages (from-to) | 56-59 |
| Number of pages | 4 |
| Journal | Huaxue Gongcheng/Chemical Engineering (China) |
| Volume | 29 |
| Issue number | 1 |
| State | Published - 2001 |