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Patent Searching and Data


Title:
WASTE POLYESTER-COTTON BLEND FABRIC COMPOUND DECOLORIZATION METHOD
Document Type and Number:
WIPO Patent Application WO/2019/047175
Kind Code:
A1
Abstract:
Provided is a waste polyester-cotton blend fabric compound decolorization method, comprising the following steps: immersing waste polyester-cotton blend fabric in an ester decolorization agent, and performing first decolorization treatment at a temperature of 145-160°C; using a C1-C3 fatty alcohol washing liquid to perform first cleaning treatment of waste polyester-cotton blend fabric which has gone through first decolorization treatment; putting the cleaned waste polyester-cotton blend fabric in a hydrogen peroxide solution having a pH of 9-11 and containing a stabilizer, and performing second decolorization treatment at a temperature of 90-100°C; and using water to perform second cleaning treatment of waste polyester-cotton blend fabric which has gone through second decolorization treatment, then drying. The waste polyester-cotton blend fabric compound decolorization method has a simple, rapid and low-cost technical process, does not pollute the environment, has a decolorization rate of 90% or higher for all different colors of polyester-cotton blend fabric, and is a completely ideal polyester-cotton blend fabric decolorization method.

Inventors:
KEH, Edwin Yee Man (R906, Shirley Chan Building The Hong Kong Polytechnic University, Kowloon, Hong Kong 7, 999077, CN)
YAO, Lei (R906, Shirley Chan Building The Hong Kong Polytechnic University, Kowloon, Hong Kong 7, 999077, CN)
LIAO, Xiao (R906, Shirley Chan Building The Hong Kong Polytechnic University, Kowloon, Hong Kong 7, 999077, CN)
LIU, Yang (R906, Shirley Chan Building The Hong Kong Polytechnic University, Kowloon, Hong Kong 7, 999077, CN)
CHEUK, Kevin (R906, Shirley Chan Building The Hong Kong Polytechnic University, Kowloon, Hong Kong 7, 999077, CN)
CHAN, Alex (R906, Shirley Chan Building The Hong Kong Polytechnic University, Kowloon, Hong Kong 7, 999077, CN)
Application Number:
CN2017/101110
Publication Date:
March 14, 2019
Filing Date:
September 08, 2017
Export Citation:
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Assignee:
THE HONG KONG RESEARCH INSTITUTE OF TEXTILES AND APPAREL LIMITED (R906-08, Shirley Chan Building The Hong Kong Polytechnic, Kowloon, Hong Kong 7, 999077, CN)
International Classes:
C08J11/08; C08J11/04
Foreign References:
CN103603194A2014-02-26
CN103665426A2014-03-26
CN104060473A2014-09-24
US5236959A1993-08-17
Attorney, Agent or Firm:
LUNG TIN INTELLECTUAL PROPERTY AGENT LTD. (18th Floor, Tower B Grand Place No.5 Huizhong Road, Chaoyang District, Beijing 1, 100101, CN)
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