公开(公告)号：US20220177668A1

公开(公告)日：2022-06-09

申请号：US17602574

申请日：2020-04-08

Applicant: Korea University Research and Business Foundation ,  EWHA UNIVERSITY - INDUSTRY COLLABORATION FOUNDATION ,  KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Kyoung Heon KIM ,  Jeong Chan JOO ,  Hee Taek KIM ,  Si Jae PARK ,  Hyun Gil CHA ,  Bong Keun SONG ,  Jae Kyun KIM

IPC: C08J11/14 ,  C08G63/183 ,  C12P7/42 ,  C12P7/44 ,  C12P7/22

Abstract: The present invention pertains to a method for producing high value-added compounds from polyethylene terephthalate. More specifically, the present invention demonstrates that a monomeric terephthalic acid obtained from the chemical hydrolysis of polyethylene terephthalate can be converted to high value-added aromatic compounds and aromatic-derived compounds, and ethylene glycol, which is another monomer of polyethylene terephthalate, can be converted to glycolic acid, which is a cosmetic material. The present invention is characterized by recycling polyethylene terephthalate waste into high value-added compounds.

公开(公告)号：US20240229084A9

公开(公告)日：2024-07-11

申请号：US18278976

申请日：2022-02-25

Applicant: Korea University Research and Business Foundation

Inventor： Kyoung Heon KIM ,  Dong Hyun KIM ,  Jae Kyun KIM ,  Dong Oh HAN

IPC: C12P7/42 ,  C07C67/297

CPC classification number: C12P7/42 ,  C07C67/297

Abstract: The present invention relates to a chemical and biological integrated degradation process for PET, for recycling PET, and, more specifically, the present invention provides a PET upcycling technique for producing a high-value product via a chemical pretreatment process of PET, a TPA and EG production process using an enzyme, and a process for converting TPA and EG to PCA and GLA, respectively.

公开(公告)号：US20240132922A1

公开(公告)日：2024-04-25

申请号：US18278976

申请日：2022-02-25

Applicant: Korea University Research and Business Foundation

Inventor： Kyoung Heon KIM ,  Dong Hyun KIM ,  Jae Kyun KIM ,  Dong Oh HAN

IPC: C12P7/42 ,  C07C67/297

CPC classification number: C12P7/42 ,  C07C67/297

Abstract: The present invention relates to a chemical and biological integrated degradation process for PET, for recycling PET, and, more specifically, the present invention provides a PET upcycling technique for producing a high-value product via a chemical pretreatment process of PET, a TPA and EG production process using an enzyme, and a process for converting TPA and EG to PCA and GLA, respectively.