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Isothermal rapid-dyeing process for wool with vinyl sulfone type reactive dyes and sulfuric acid added at dyeing temperature
Isothermal rapid-dyeing process for wool with vinyl sulfone type reactive dyes and sulfuric acid added at dyeing temperature
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机译:羊毛与乙烯基砜类活性染料及在染色温度下添加硫酸的等温快速染色工艺
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摘要
The dyeing of wool with reactive dyes in a strongly acid medium (containing sulfuric acid) requires no longer acceptable, long heating-up times (50-60 minutes) in order to obtain level dyeings. It has now been found, according to the invention, that by rapidly heating up the dyebath which contains the dyes of the vinylsulfonyl type and also all the ingredients, except the acid, to the dyeing temperature together with the material to be dyed and then metering in the sulfuric acid under isothermal conditions at the dyeing temperature it is possible to obtain very level and very fast dyeings in a significantly shorter overall dyeing time. Carbonized wool can be dyed without prior neutralization.
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