Title:
METHOD FOR RECYCLING WASTE POLYESTER BLENDED FABRIC CONTAINING NATURAL FIBER
Document Type and Number:
WIPO Patent Application WO/2019/047177
Kind Code:
A1
Abstract:
Provided is a method for recycling a waste polyester blended fabric containing natural fibers, comprising placing the waste polyester blended fabric in a water-soluble tertiary amine oxide solution containing an antioxidant to dissolve the natural fibers, so as to form a fiber solution and a solid insoluble material, then recycling the fiber solution to obtain regenerated natural cellulose fiber, and recycling the polyester solid by sequentially adding an ester solvent and a fatty alcohol into the solid insoluble material. The recovering method can separate polyester from other natural fibers, is suitable for all polyester blended fabrics, and has a high recycle rate for polyester and regenerated natural cellulose fibers, and therefore avoids the use of a highly toxic and irritating chemical agent, and the agent used can also be recycled and reused. The recycling method has the advantages of high efficiency, low cost, being environmentally friendly, and having a wide application range etc., thus having the potential of industrial application.
Inventors:
KEH EDWIN YEE MAN (CN)
YAO LEI (CN)
LIAO XIAO (CN)
LIU YANG (CN)
CHEUK KEVIN (CN)
CHAN ALEX (CN)
YAO LEI (CN)
LIAO XIAO (CN)
LIU YANG (CN)
CHEUK KEVIN (CN)
CHAN ALEX (CN)
Application Number:
PCT/CN2017/101112
Publication Date:
March 14, 2019
Filing Date:
September 08, 2017
Export Citation:
Assignee:
HONG KONG RES INST TEXTILES & APPAREL LTD (CN)
International Classes:
C08J11/08; C08J11/04; C08J11/06; D01F2/00
Foreign References:
| CN102199310A | 2011-09-28 | |||
| JPH1160795A | 1999-03-05 | |||
| CN1143090A | 1997-02-19 | |||
| CN101942705A | 2011-01-12 | |||
| CN102250379A | 2011-11-23 |
Attorney, Agent or Firm:
LUNG TIN INTELLECTUAL PROPERTY AGENT LTD. (CN)
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