公开(公告)号：WO2020136547A1

公开(公告)日：2020-07-02

申请号：PCT/IB2019/061270

申请日：2019-12-23

申请人： AQUAFIL S.P.A. ,  GENOMATICA INC.

发明人： CECCHETTO, Michele ,  DAL MORO, Anacleto ,  SUOMINEN, Lauri Hannunpoika ,  JAPS, Michael

IPC分类号： C07D223/10 ,  C07D201/08

摘要： The present invention refers to a new process for the production of epsilon caprolactam (CPL) from 6-aminocaproic acid (6-ACA) which can be obtained either from traditional petro chemical processes or which can be obtained from biochemical processes. With the proposed process the reaction time for conversion of 6-aminocaproic acid to the Nylon 6 monomer is shorter and significant energy savings are possible which is advantageous for industrial scale production. The conversion of 6-aminocaproic acid to the Nylon 6 monomer runs at atmospheric pressure and in the final product epsilon caprolactam with no oligomers formation of significance is obtained.

公开(公告)号：WO2023084441A1

公开(公告)日：2023-05-19

申请号：PCT/IB2022/060831

申请日：2022-11-10

申请人： AQUAFIL S.P.A.

发明人： BERTOLLA, Maddalena ,  CECCHETTO, Michele ,  DAL MORO, Anacleto ,  MODESTI, Michele ,  GUERRA, Stefano

IPC分类号： C07D223/10

摘要： The present invention relates to a process for producing ε-caprolactam by depolymerization of polycaprolactam (PA6) which comprises : a. contacting a composite material comprising PA6 and at least one fibrous reinforcing material with a solvent comprising at least one polyol, at a temperature in the range 130°C 200°C, so as to obtain a solution comprising solubilized PA6 and an insoluble fraction comprising at least said fibrous reinforcing material; b. separating said insoluble fraction from said solution; c. combining said solution with a coagulation liquid comprising water to obtain a partially depolymerized coagulated PA6 dispersed in a liquid phase; d. separating said coagulated PA6 from said liquid phase; e. subjecting said coagulated PA6 separated in said phase d to further depolymerization by hydrolysis to obtain ε-caprolactam.

公开(公告)号：WO2022243832A1

公开(公告)日：2022-11-24

申请号：PCT/IB2022/054519

申请日：2022-05-16

申请人： AQUAFIL S.P.A.

发明人： CECCHETTO, Michele ,  BERTOLLA, Maddalena ,  DAL MORO, Anacleto ,  MODESTI, Michele ,  GUERRA, Stefano

IPC分类号： C08J11/24 ,  C07C67/00 ,  C07C69/82

摘要： The present invention relates to a process for depolymerizing a material comprising polyethylene terephthalate (PET) by glycolysis with ethylene glycol (EG), comprising reacting the material comprising PET with EG in the presence of at least one catalyst so as to obtain a glycolized product containing bis (2- hydroxyethyl ) terephthalate (BHET) and/ or oligomers thereof, wherein said catalyst comprises an acetate salt of a metal chosen from : calcium, magnesium, aluminium and mixtures thereof. The catalyst can be prepared in situ by a reaction between acetic acid and a compound containing the metal.