| 摘要 |
Cellulose fibres are printed with a paste containing a reactive dyestuff, an alkaline substance and a thickener, which thickener comprises an oilin-water type emulsion of an inert volatile organic liquid employing as an emulsifier a non-ionic, ethylene oxide addition product surface-active agent. Numerous reactive dyestuffs are specified. Specified alkaline substances are sodium and potassium carbonates, sodium bicarbonate, sodium hydroxide, trisodium phosphate and mixtures of diand tri-sodium phosphates. The organic liquid of the emulsion may be an aliphatic, aromatic or hydroaromatic hydrocarbon of boiling point 90 DEG -180 DEG C. Specified emulsifiers are condensation products of ethylene oxide with alcohols or alkyl phenols. The aqueous phase of the emulsion may also contain the usual water-soluble thickeners such as alginates, carboxymethyl cellulose, locust bean meal, starch, and starch ethers. The printing paste may also contain anti-reduction agents such as nitrobenzene sulphonic acid salts, hydrotropic agents such as urea, sequestering agents such as polyphosphates and fungicidal and bacterioidal substances. The prints are finally steamed and washed. Examples are given.
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