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1. (WO2017034873) OXIDATIVE METHOD FOR DECOLORIZING TEXTILE MATERIALS

Pub. No.:    WO/2017/034873    International Application No.:    PCT/US2016/047303
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Thu Aug 18 01:59:59 CEST 2016
IPC: C09D 9/00
Applicants: NORTH CAROLINA STATE UNIVERSITY
Inventors: HINKS, David
HUSSAIN, Maqbool
WANG, Guan
Title: OXIDATIVE METHOD FOR DECOLORIZING TEXTILE MATERIALS
Abstract:
The disclosure relates to a method for decolorization of a dye-colored synthetic polymer, which includes the steps of treating a dye-colored synthetic polymer, such as polyester, with a treatment composition at pH 4 or less, the treatment composition comprising hydrogen peroxide, an iron catalyst, water, and a ketone. The resulting decolorized synthetic polymer is then separated from the treatment composition.