| 摘要 |
1481742 Producing multicolour effects on textile materials HOECHST AG 16 Aug 1974 [16 Aug 1973] 36247/74 Heading D1B Irregular tone-in-tone effects, shadow effects, or multicolour effects are produced on a textile material consisting of or containing polyester fibres, by applying to warps of the textile material a water-insoluble alkali-sensitive disperse dyestuff, drying the warps, then weaving them with a weft which is undyed or dyed in a different manner, binding the piece goods obtained together to form a rape, loosely tying them and applying to the material in rape form an aqueous solution of an alkaline agent of pH 10.5-14 which is free from oxidising and reducing agents, so as to prevent substantially the subsequent fixation of the disperse dyestuff in the areas to which the alkaline agent is applied, and finally thermosoling the material after untying the rape, to fix the dyestuff. Materials used are polyester and polyester/cotton. The alkali-resistant dyestuff is preferably applied by padding with the sizing liquor applied to the warp. The alkaline agent, particularly an alkali metal hydroxide, carbonate, or triphosphate, is preferably applied by spraying. Fixing is preferably by dry heat at 180-230‹C. In a modification of the above process, the alkali-sensitive dyestuff is applied to the fibres after weaving, the piece goods are dried, and then subjected to alkali treatment in rape form. Other dyestuffs used to obtain multicolour effects are reactive dyes and alkali-resistant disperse dyes.
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