公开(公告)号：US3818081A

公开(公告)日：1974-06-18

申请号：US18751171

申请日：1971-10-07

Applicant: DU PONT CANADA

Inventor： ADAMEK E

IPC: C07C51/487 ,  C07C51/42

CPC classification number: C07C51/487 ,  C07C55/14

Abstract: A process for separating adipic acid from a mixture of adipic, glutaric and succinic acids which comprises treating the mixture of acids under substantially anhydrous conditions with less than the stoichiometric amount of ammonia for complete ammoniation, separating the glutaric and succinic acids in the form of their corresponding imides and recovering adipic acid.

Abstract translation: 从己二酸，戊二酸和琥珀酸的混合物中分离己二酸的方法，其包括在基本上无水条件下用小于化学计量的氨处理酸的混合物以完全氨化，分离其形式的戊二酸和琥珀酸 相应的酰亚胺和回收己二酸。

公开(公告)号：US3745164A

公开(公告)日：1973-07-10

申请号：US3745164D

申请日：1971-07-27

Applicant: DU PONT CANADA

Inventor： ADAMEK E

IPC: C07D201/08 ,  C07D211/76 ,  C07D27/08

CPC classification number: C07D201/08 ,  C07D211/76

Abstract: THE MANUFACTURE OF THE LACTAMS CONTAINING 4 OR 5 CARBON ATOMS (4-BUTYROLACTAM AND 5-VALEROLACTAM) IN WHICH SUCCINIMIDE AND GLUTARIMIDE, OR MIXTURES THEREOF, ARE REACTED WITH HYDROGEN IN THE PRESENCE OF A HYDROGENATION CATALYST AT A PRESSURE OF ABOUT FROM 1 TO 1000 ATOMSPHERES AND AT A TEMPERATURE OF ABOUT FROM 230 TO 300* C. IN THE ABSENCE OF A SOLVENT, AND ISOLATING THE LACTAMS FORMED.