NEW METHOD FOR DYEING SILK

WIPO Patent Application WO/2019/136614

A1

Disclosed is a method for dyeing silk. The method comprises: A. preparation of a dyeing solution: the dyeing solution includes a dye solution and an auxiliary solution, which are respectively prepared by dissolving a material in soft water and uniformly stirring same according to the dyeing process requirements, and then stored in liquid storage tanks for use; B. delivery of the dyeing solution: the dye solution and the auxiliary solution are mixed at a ratio of 5:1 and delivered into a padding tank, with the temperature being 18℃-35℃; C. padding of the dyeing solution: a silk fabric is continuously and smoothly introduced into the padding tank to be immersed in the dyeing solution and absorb the dyeing solution, and is then wound up; and D. stacking: a silk fabric roll resulting from the winding, together with a spindle head, is immediately tightly cladded with a thin film, and is then stacked for 5-24 hours in a rotating state, with the rotation speed being 4-8 r/min, and the ambient temperature being 15℃-35℃. The method has the advantages of saving steam, saving auxiliaries, having a high dye utilization rate, less dyeing wastewater, and being environmentally friendly; and the dye permeability, uniformity, and flatness of the dyed fabric are all better when compared with conventional dyeing methods.

JP2004511610	Monoazo dye
WO/2001/077232	DYE MIXTURE OF WATER-SOLUBLE FIBER-REACTIVE AZO DYES, METHOD FOR THE PRODUCTION AND USE THEREOF
JPH09124961	DIAZO REACTIVE DYE

LI YUQING (CN)

PCT/CN2018/072013

July 18, 2019

January 10, 2018

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HAIAN KEHAO TEXTILE CO LTD (CN)

D06P3/10; D06B3/00

CN1928186A	2007-03-14
CN102154853A	2011-08-17
CN102493224A	2012-06-13
CN104611944A	2015-05-13

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