China N-Vinyl Caprolactam CAS 2235-00-9
N-Vinylcaprolactam; 1-Ethenylazepan-2-one; 1-Vinylhexahydro-2H-azepin-2-one; 1-Ethenylhexahydro-2H-azepin-2-one; NVCL
N-Vinyl Caprolactam factory mentioned extraction purification
A. Extraction and washing: the N-vinyl-caprolactam reaction solution to be washed is dissolved by adding an organic solvent, and water is added to the organic system for washing.
B Distillation: The organic solution in Step A is subjected to atmospheric pressure distillation to recover the organic solvent, and then vacuum distillation is performed to obtain a high content of N-vinyl-caprolactam.
Using extraction method, the most important thing is that the main purification method in this process is only liquid-liquid extraction, and the reaction liquid is directly processed, eliminating the distillation step, thereby making the China N-Vinyl Caprolactam process and the required equipment more simple and suitable Large industrial production saves production costs; it is worth mentioning that caprolactam, organic solvents and water are reused throughout the process.