GB1031534A - New colouration process - Google Patents

Abstract

Processes for dyeing cellulose-containing textile materials comprise the application of a reactive dye and thereafter the application of (1) a resin finishing agent, (2) an alkaline catalysed modifying agent for cellulose, (3) a resin curing catalyst which may be either acid or alkaline or an acid or alkali generator and, optionally, (4) a cationic dye fixing agent, thereafter drying and baking the material to cure the resin and, in the case that the resin curing catalyst is acid or an acid generator thereafter contacting the material with alkali. The reactive dyestuff is water-soluble and may contain at least one of a number of specified reactive groups. The dye may be applied by known methods of dyeing, padding or printing and the material is then preferably dried before continuing the process. Many finishing agents (1) are listed including the methylol compounds of nitrogen-containing substances or their lower alkyl ethers. The specified modifying agents (2) are disodium tris-(b -sulphatoethyl) sulphonium inner salt, divinyl sulphone, di-(b -hydroxyethyl)-sulphone, di-epoxides, di-halogeno-propanols and halogeno-1 : 3 : 5-triazines. Cationic agents (4) are organic compounds free from anionic water-solubilizing groups but containing one or more ammonium groups and, optionally, an aliphatic chain of 6 or more carbon atoms and a number of classes thereof are listed. The catalysts (3) are well known acid and alkaline catalyst materials. Softening and lubricating agents may be co-employed. The baking may be effected at 120-200 DEG C. and may be followed by rinsing and soaping treatments. Examples of dyeing cotton, linen and viscose materials are given.