公开(公告)号：US10787417B2

公开(公告)日：2020-09-29

申请号：US16488016

申请日：2017-12-15

申请人： AquafilSLO d.o.o.

发明人： Anacleto Dal Moro ,  Michele Cecchetto ,  Denis Jahic ,  Vid Margon

IPC分类号： C07D201/16 ,  B01D3/10 ,  B01D3/14 ,  B01D11/04 ,  C07D201/06 ,  C07D223/10

摘要： The present invention relates to a process for purifying caprolactam from solutions of crude caprolactam by a direct treatment with one or more alkaline compounds of polyvalent metals, preferably bivalent and trivalent, without resorting to organic solvent extraction as used in the usual purification process. A further subject of the present invention is a facility devoid of a unit for organic solvent extraction and designed to carry out the caprolactam purification process described herein.

公开(公告)号：US11208380B2

公开(公告)日：2021-12-28

申请号：US17000116

申请日：2020-08-21

申请人： AquafilSLO d.o.o.

发明人： Anacleto Dal Moro ,  Michele Cecchetto ,  Denis Jahic ,  Vid Margon

IPC分类号： B01D3/10 ,  C07D201/16 ,  B01D3/14 ,  B01D11/04 ,  C07D201/06 ,  C07D223/10

摘要： The present invention relates to a process for purifying caprolactam from solutions of crude caprolactam by a direct treatment with one or more alkaline compounds of polyvalent metals, preferably bivalent and trivalent, without resorting to organic solvent extraction as used in the usual purification process.
A further subject of the present invention is a facility devoid of a unit for organic solvent extraction and designed to carry out the caprolactam purification process described herein.

公开(公告)号：US20210040036A1

公开(公告)日：2021-02-11

申请号：US17000116

申请日：2020-08-21

申请人： AquafilSLO d.o.o.

发明人： Anacleto Dal Moro ,  Michele Cecchetto ,  Denis Jahic ,  Vid Margon

IPC分类号： C07D201/16 ,  B01D3/10 ,  B01D3/14 ,  B01D11/04 ,  C07D201/06 ,  C07D223/10

摘要： The present invention relates to a process for purifying caprolactam from solutions of crude caprolactam by a direct treatment with one or more alkaline compounds of polyvalent metals, preferably bivalent and trivalent, without resorting to organic solvent extraction as used in the usual purification process.
A further subject of the present invention is a facility devoid of a unit for organic solvent extraction and designed to carry out the caprolactam purification process described herein.

公开(公告)号：US20190382339A1

公开(公告)日：2019-12-19

申请号：US16488016

申请日：2017-12-15

申请人： AquafilSLO d.o.o.

发明人： Anacleto Dal Moro ,  Michele Cecchetto ,  Denis Jahic ,  Vid Margon

IPC分类号： C07D201/16 ,  C07D223/10 ,  C07D201/06 ,  B01D11/04 ,  B01D3/10 ,  B01D3/14

摘要： The present invention relates to a process for purifying caprolactam from solutions of cmde caprolactam by a direct treatment with one or more alkaline compounds of polyvalent metals, preferably bivalent and trivalent, without resorting to organic solvent extraction as used in the usual purification process. A further subject of the present invention is a facility devoid of a unit for organic solvent extraction and designed to carry out the caprolactam purification process described herein.