A method is described for dyeing fibrous materials made of or containing wool with anionic dyes, which comprises dyeing these materials in the presence of a wool preservative comprising at least one compound of the formula R--CH.sub.2 --CH(OH)--CH.sub.2 --Y (I), where the variables are as defined in the claims. Rub-fast level dyeings are obtainable without deterioration in the quality of the wool.
                            本文描述了一种用阴离子
染料染色含有羊毛或羊毛制品的纤维材料的方法,其中包括在羊毛
防腐剂的存在下染色这些材料,该
防腐剂包括至少一个化合物,其
化学式为R-CH.sub.2-CH(OH)-CH.sub.2-Y(I),其中变量的定义如权利要求中所述。可以获得抗摩擦染色,而不会降低羊毛的质量。