GB849368A - Textile treatment process - Google Patents

Abstract

Finishes possessing improved resistance to wet treatments are produced by treating textile materials at a pH greater than 7 with a water-sensitive finishing agent which is a non-coloured organic substance containing free hydroxy- or amino-groups and a non-self-condensable substantially non-fluorescent mono- or di-halogeno -1 : 3 : 5-triazine and then heating. Suitable water-sensitive finishing agents are protein-aceous materials, e.g. casein and gelatin, high molecular weight polyhydroxy compounds, e.g. starches, starch ethers, dextrins, cellulose ethers and polyvinyl alcohol, and water-soluble or water-insoluble amines in the form of water-soluble salts with organic acids, e.g. long-chain aliphatic amines, such as octadecylamine, alkylated arylamines containing a long aliphatic carbon chain in the molecule, such as 4-octadecylaniline and 4-octadecylphenyl biguanide, and the reaction products of long chain aliphatic carboxylic acids with polyalkylene polyamines. The mono- and di-halogeno -1 : 3 : 5- triazines may be water-soluble or water-insoluble, colourless or coloured. Suitable water-insoluble triazine compounds are those in which alkyl, cyclo-alkyl, aralkyl or aryl groups are attached to the triazine nucleus or in which an organic radical is attached to the triazine nucleus through a nitrogen, oxygen or sulphur atom and suitable water-soluble triazine compounds are those having an organic radical carrying either a negatively charged solubilizing group, e.g. a sulphonic or carboxylic group, or a positively charged solubilizing group, e.g. a quaternary ammonium group, attached through a nitrogen, oxygen or sulphur atom to a carbon atom of the triazine ring. Water soluble triazine compounds may be applied as an aqueous solution and water insoluble triazine compounds as an aqueous dispersion prepared by stirring or milling with an anionic, cationic or non-ionic dispersing agent. The solution may be rendered alkaline by the addition of sodium or potassium hydroxides, carbonates or bicarbonates or trisodium phosphates or mixtures thereof. The treatment is preferably carried out at 10 DEG C.-100 DEG C., the finishing agent, triazine and alkali being applied simultaneously or successively in any order with drying after each stage of treatment. The treated material is then heated by steaming or by passage through a heated chamber, over heated drying cylinders or through a bath of molten metal at a temperature up to 150 DEG C. for up to 15 minutes. Specified fibres are cotton, viscose rayon, cellulose acetate, polyamides, polyesters and wool, the handle of the fibres being modified by the treatment. In Example 8 cotton cloth is impregnated with an aqueous composition comprising gelatin, china clay, the pigment Monolite Fast Scarlet R.N.V., 2-b -naphthoxy -4 : 6- dichloro -1 : 3 : 5- triazine and sodium bicarbonate, dried, calendered at 70 DEG C. without friction and then heated at 110 DEG C. and in Example 14 a cotton cloth is dyed and stiffened by impregnation with an aqueous composition comprising gelatin, the sodium salt of 1 -amino -4- [41-(4 : 6-dichloro -1 : 3 : 5-triazin -2- yl) amino -31- sulphoanilin] -anthraquinone -2 : 5- disulphonic acid and sodium bicarbonate, followed by heating at 115 DEG C.