| 摘要 |
PCT No. PCT/FR97/01903 Sec. 371 Date Jul. 27, 1999 Sec. 102(e) Date Jul. 27, 1999 PCT Filed Oct. 23, 1997 PCT Pub. No. WO98/17641 PCT Pub. Date Apr. 30, 1998The present invention relates to the treatment of lactams obtained directly from their synthesis process, avoiding the formation of oligomers as far as possible. The invention consists, more precisely, of a process for treating a lactam using the reaction flow obtained from a cyclizing hydrolysis of an aminonitrile, characterized in that the reaction flow leaving the hydrolysis reactor is cooled, over a period of less than or equal to 1 hour, to a temperature below or equal to 150 DEG C. before it is fractionated.
|
