Login| Sign Up| Help| Contact|

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 (CN)
YAO LEI (CN)
LIAO XIAO (CN)
LIU YANG (CN)
CHEUK KEVIN (CN)
CHAN ALEX (CN)
Application Number:
CN2017/101110
Publication Date:
March 14, 2019
Filing Date:
September 08, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
THE HONG KONG RES INSTITUTE OF TEXTILES AND APPAREL LIMITED (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. (100101, CN)
Download PDF: