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US 2025/0154334 A1Published application
Efficient chemical recycling method for waste polyester fabrics
AssigneeNan Ya Plastics Corporation
InventorsTe-Chao Liao, Jung-Jen Chuang, Zhang-Jian Huang, Cheng Hsun Chen, Mong-Chen Chang
Life of this patent
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Abstract
The disclosure provides a chemical recycling method for polyester fabrics, which includes the following steps. The polyester fabric is extracted using a composite solvent and filtered to obtain a decolored polyester fabric. The composite solvent contains alcohol ether and phenyl ether, and the decolored polyester fabric contains the composite solvent. Ethylene glycol is then added to the decolored polyester fabric to depolymerize into ethylene terephthalate monomers.
Claims13
A chemical recycling method for polyester fabrics, comprising:
- performing extraction the polyester fabrics using a composite solvent and performing filtration, so as to obtain a decolored polyester fabric, the composite solvent contains alcohol ether and phenyl ether, and the decolored polyester fabric contains the composite solvent;
- and
- adding ethylene glycol to the decolored polyester fabric for depolymerization into ethylene terephthalate monomers ethylene glycol.
Dependencies are inferred from the claim text.