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：US20210238348A1

公开(公告)日：2021-08-05

申请号：US17056981

申请日：2019-03-19

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Jeyoung PARK ,  Dong Yeop OH ,  Sung Yeon HWANG ,  Hyun Gil CHA ,  Jong Geon JEGAL ,  Ho Jun KIM ,  Seul A PARK

IPC: C08G69/32 ,  C08J3/11 ,  B01D39/16 ,  D01F6/60 ,  D01F1/10 ,  D01D1/02

Abstract: The present disclosure relates to a method for preparing an aramid nanofiber dispersion. More specifically, the present invention relates to a method for preparing aramid nanofibers in a short time from aromatic polyamide-based polymers other than fibers, and to aramid nanofibers prepared therefrom.