公开(公告)号：US4369096A

公开(公告)日：1983-01-18

申请号：US179316

申请日：1980-08-18

申请人： Hermann Seifert ,  Helmut Waldmann ,  Rolf Wirthwein ,  Willi Hofen

发明人： Hermann Seifert ,  Helmut Waldmann ,  Rolf Wirthwein ,  Willi Hofen

IPC分类号： C07D301/32 ,  C07D303/04 ,  B01D3/34

CPC分类号： C07D301/32 ,  C07D303/04

摘要： A process has been developed for the purification of expoxides containing carbonyl compounds as impurities wherein the carbonyl compound content is up to 2% by weight of epoxide. Purification is effected by treatment with compounds containing at least one NH.sub.2 group.

摘要翻译： 已经开发了用于纯化含有作为杂质的羰基化合物的含氧化合物的方法，其中羰基化合物含量高达2重量％的环氧化物。 通过用含有至少一个NH 2基团的化合物处理来进行纯化。

公开(公告)号：US4070253A

公开(公告)日：1978-01-24

申请号：US678826

申请日：1976-04-28

申请人： Willi Hofen ,  Rolf Wirthwein ,  Karl-Hermann Reissinger ,  Jorg Krekel

发明人： Willi Hofen ,  Rolf Wirthwein ,  Karl-Hermann Reissinger ,  Jorg Krekel

IPC分类号： C07D301/14 ,  C07D301/32 ,  B01D3/10 ,  C07D301/02

CPC分类号： C07D301/32

摘要： Process for separating a solution, which essentially contains propylene oxide, propylene, a carboxylic acid containing 1 to 4 carbon atoms and benzene, by distillation. The solution is fed to a first distillation stage in which propylene, propylene oxide and an amount of the benzene contained in the solution such that the top product from this first distillation contains 20 to 70% by weight of benzene are distilled off over the top at a pressure of 1.0 to 2.5 bars, and in which the carboxylic acid and the remaining benzene are obtained as the sump product. The top product from the first distillation is fed to a second distillation column in which propylene and possibly present small fractions of components which boil lower than propylene oxide are distilled off over the top and a sump product which essentially consists of propylene oxide and benzene is obtained and part of this is returned as reflux to the first distillation column.

摘要翻译： 通过蒸馏分离基本上含有环氧丙烷，丙烯，含有1至4个碳原子的羧酸和苯的溶液的方法。 将溶液进料到第一蒸馏阶段，其中丙烯，环氧丙烷和溶液中所含的一定量的苯，使得来自该第一次蒸馏的顶部产物含有20至70重量％的苯在顶部蒸馏掉 压力为1.0至2.5巴，其中获得羧酸和剩余的苯作为贮槽产物。 将第一蒸馏的顶部产物进料到第二蒸馏塔，其中丙烯和可能存在的沸点低于环氧丙烷的组分的小部分在顶部蒸馏掉，得到基本上由环氧丙烷和苯组成的集水槽产品 并且其一部分作为回流返回到第一蒸馏塔。