Title:
METHOD FOR RECYCLING COTTON AND POLYESTER FIBER FROM WASTE FABRIC
Document Type and Number:
Japanese Patent JP2023036645
Kind Code:
A
Abstract:
To provide a method of producing a high quality material containing cellulose and terephthalic acid (TPA) having less influence on an environment from waste fabric.SOLUTION: A method for producing cellulose and terephthalic acid (TPA) from waste fabric, including cotton/polyester blend materials, the method comprising: using a base at 105°C to 190°C at 40 to 300 psi (275.79 to 2068.43 kPa) for 0 to 90 minutes in a subcritical water reactor to treat the waste fabric materials, wherein cellulose with a degree of polymerization ranging from 150 to 2500, and dissolved TPA and ethylene glycol (EG) are produced.EFFECT: The cellulose and TPA produced are of high quality allowing the production of regenerated cellulose and regenerated polyethylene terephthalate (PET) suitable for fiber spinning and fabric applications.SELECTED DRAWING: Figure 1
Inventors:
Barra, Florin Gee.
Show Walter, Todd
Su, Sun-Chen
Jones, Jeremy
Bob Julian
Show Walter, Todd
Su, Sun-Chen
Jones, Jeremy
Bob Julian
Application Number:
JP2022195852A
Publication Date:
March 14, 2023
Filing Date:
December 07, 2022
Export Citation:
Assignee:
Sark, Inc.
International Classes:
C08J11/16; C07C27/02; C07C29/09; C07C31/20; C07C51/09; C07C51/43; C07C63/26; C08B16/00; C08J11/24; C08J11/28; D06B19/00; D06M11/00; D06M11/05
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK