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1. (WO2018220375) LOW TEMPERATURE COLOURING METHOD

Pub. No.:    WO/2018/220375    International Application No.:    PCT/GB2018/051480
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Fri Jun 01 01:59:59 CEST 2018
IPC: D06P 1/00
D06P 1/92
Applicants: UNIVERSITY OF LEEDS
Inventors: BURKINSHAW, Stephen, Martin
Title: LOW TEMPERATURE COLOURING METHOD
Abstract:
The present invention relates to a method of colouring polymer substrates at low temperatures. The method comprises subjecting the polymer substrate that is to be coloured to a colouring liquor comprising a solvent in which the colourant has a high solubility and then adding a solvent in which the colourant has a low solubility, typically water.