公开(公告)号：US20250092217A1

公开(公告)日：2025-03-20

申请号：US18887872

申请日：2024-09-17

Applicant: Sanko Tekstil Isletmeleri San. Ve Tic. A.S.

Inventor： Fatih KONUKOGLU ,  Gökhan KAPLAN ,  Gözde ÖKTEM ,  Agamirze HAMITBEYLI ,  Kenan LOYAN ,  Sabrettin AKBULUT ,  Nuriye ZENGIN

IPC: C08J11/16 ,  D06P5/13

Abstract: Process to recover NaOH, polyester monomers, dyes and byproducts from an alkaline depolymerization liquor resulting from a depolymerization reaction of polyester in a blend textile. The process comprises concentrating the liquor solution in a mixture comprising water, solid NaOH, dyes and other liquid products, extracting ethylene glycol from the mixture, dissolving solid NaOH, recovering solid dyes and recovering terephthalic acid.