公开(公告)号：US3761467A

公开(公告)日：1973-09-25

申请号：US3761467D

申请日：1971-02-11

Applicant: ALLIED CHEM

Inventor： WILLIAMS B ,  BOHN F

IPC: C07D201/16 ,  C07D41/06

CPC classification number: C07D201/16

Abstract: A PROCESS FOR SEPARATING E-CAPROLACTAM FROM AN AQUEOUS SOLUTION HIGHLY CONCENTRATED IN BOTH COLOR-FORMING AND OXIDIZABLE IMPURITIES WHEREBY THE SOLUTION IS FIRST EXTRACTED WITH AN ORGANIC, WATER-IMMISCIBLE SOLVENT FOR E-CAPROLACTAM, THEREBY SEPARATING THE E-CAPROLACTAM FROM THE COLOR-FORMING IMPURITIES AND THE RESULTANT ORGANIC E-CAPROLACTAM SOLUTION IS EXTRACTED WITH AN AQUEOUS SOLUTION, THEREBY SEPARATING THE E-CAPROLACTAM FROM THE OXIDIZABLE IMPURITIES.