Process for the dyeing of textile material and apparatus for...

Details Process for the dyeing of textile material and apparatus for... Process for the dyeing of textile material and apparatus for...

D - Textiles, Paper

06

P

68/2, 8/51, 8/31

D06P 7/00 (2006.01) D06B 23/20 (2006.01) D06P 1/00 (2006.01) D06P 3/06 (2006.01)

Patent

CA 1105655

Case 1-10286* Canada PROCESS FOR THE DYEING OF TEXTILE MATERIAL AND APPARATUS FOR CARRYING OUT THE PROCESS Abstract of the Disclosure Described is a process for the dyeing of textile material by the exhaust method, whereby the dyeing is commenced at a pH value of between 6 and 12 and terminated at a pH value of between 3 and 7, which process is characterised in that during dyeing the pH value is lowered, by the addition of an inorganic acid, by at least 1 unit of pH value; and that subsequent to the dyeing the exhausted bath, after the addition of alkali, dye and, if required, further auxiliaries, is optionally used afresh for dyeing. Furthermore an apparatus for carrying out this process is described which consists of a dyeing-aggregate having a liquor-circulating system which contains at least one pH- measuring point as well as at least one dosing device.

269132

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