| 摘要 |
<p>A process for the batch preparation of polylaurolactam in the melt, involving introducing molten, anhydrous laurolactam at a temperature of up to 280 DEG C. into a pressure-resistant reactor heated externally to a maximum of 290 DEG C.; introducing steam having a temperature in the range from 170 DEG to 280 DEG C. and a pressure in the range from 8 to 64 bar into the laurolactam until the laurolactam is heated under pressure to a temperature in a range from 280 DEG to 290 DEG C., to give a ring opened precondensed product; and, if desired, after release of pressure, polycondensing the ring opened precondensed product.</p> |
