-
公开(公告)号:US4148792A
公开(公告)日:1979-04-10
申请号:US915732
申请日:1978-06-15
IPC分类号: C07D201/16
CPC分类号: C07D201/16
摘要: A process for the purification of .epsilon.-caprolactam, wherein .epsilon.-caprolactam is treated with potassium permanganate in the presence of from 0.01 to 5% by weight of water, based on caprolactam, and subsequently crystallized from toluene, benzene, ethylbenzene or xylene.
摘要翻译: 用于纯化ε-己内酰胺的方法,其中ε-己内酰胺在高碱性高锰酸盐存在下,在0.01至5重量%的水的存在下,以己内酰胺为基础,随后在甲苯,苯,乙苯或二甲苯中结晶。
-
公开(公告)号:US4170592A
公开(公告)日:1979-10-09
申请号:US832007
申请日:1977-09-09
IPC分类号: C01C1/24 , C07D201/16
CPC分类号: C07D201/16
摘要: A process for the purification of a solution of .epsilon.-caprolactam in benzene, toluene or xylene by washing with a liquid, wherein the washing liquid is a solution of .epsilon.-caprolactam in water in a weight ratio of from 15 : 1 to 1 : 3, which is used in a quantity of from 5 to 20% by weight, based on the solution of caprolactam in benzene, toluene or xylene, and wherein there are several washing stages so that the equilibrium between the two solutions can be readjusted.
摘要翻译: 一种通过用液体洗涤来纯化ε-己内酰胺在苯,甲苯或二甲苯中的溶液的方法,其中洗涤液是ε-己内酰胺在水中的重量比为15:1至1:3的溶液 ,其用量为5至20重量%,基于己内酰胺在苯,甲苯或二甲苯中的溶液,并且其中有几个洗涤阶段,使得可以重新调节两种溶液之间的平衡。
-