公开(公告)号：US3518252A

公开(公告)日：1970-06-30

申请号：US3518252D

申请日：1966-04-14

Applicant: KANEBO LTD

Inventor： IZAWA NOBUO ,  TAMURA YOSHIO ,  FURUTANI AKIHISA ,  OKAMOTO KAZUO

IPC: C07D207/20 ,  C07D227/04 ,  C07D27/14 ,  C07D29/38 ,  C07D41/00

CPC classification number: C07D227/04 ,  C07D207/20

公开(公告)号：US3925365A

公开(公告)日：1975-12-09

申请号：US44106174

申请日：1974-02-11

Applicant: KANEBO LTD

Inventor： IZAWA NOBUO ,  KOHNO TOSHIHIKO

IPC: C07D201/12 ,  C07D201/16

CPC classification number: C07D201/12 ,  C07D201/16

Abstract: Epsilon -CAPROLACTAM MATERIAL SUCH AS A MONOMER, OLIGOMERS AND POLYMERS OF Epsilon -CAPROLACTAM AND MIXTURES OF THESE COMPOUNDS ARE PURIFIED FROM IMPURITY COMPOUNDS SUCH AS PHOSPHORIC ACID AND IONIZED METAL COMPOUNDS CONTAINED THEREIN BY BRINGING THE Epsilon -CAPROLACTAM MATERIAL INTO CONTACT WITH AN AQUEOUS SOLUTION CONTAINING 15 TO 75 PERCENT BY WEIGHT OF AT LEAST ONE ALKALI METAL PHOSPHATE TO EXTRACT THE IMPURITY COMPOUND FROM THE Epsilon -CAPROLACTAM MATERIAL INTO THE PHOSPHATE AQUEOUS SOLUTION AND, THEREAFTER, SEPARATING THE Epsilon -CAPROLACTAM MATERIAL FROM THE PHOSPHATE AQUEOUS SOLUTION BY WAY OF SETTLING OR CENTRIFUGING THE MIXTURE.

Abstract translation: ε-CABROLACTAM材料如EPS-CABROLACTAM的单体，低聚物和聚合物以及这些化合物的混合物，通过使ε-CABROLACTAM材料与含有AQUEOUS溶液接触的方式从包含在其中的酸性化合物和非离子化的金属化合物等净化化合物中纯化。 以至少一种碱金属磷酸盐的重量计为15至75％，以将来自ε-磷酸铵材料的重量化合物从磷酸盐水溶液中萃取，并且通过沉降或离心方式从磷酸盐水溶液中分离出ε-吡咯烷酮材料 混合物。