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    • 3. 发明授权
    • Dyeing of grain leather
    • 颗粒皮革染色
    • US4272243A
    • 1981-06-09
    • US102847
    • 1979-12-12
    • Dietrich LachRolf StreicherFranz Feichtmayr
    • Dietrich LachRolf StreicherFranz Feichtmayr
    • D06P1/41D06P1/60D06P3/32D06P5/00D06P5/02
    • D06P3/3206D06P1/60D06P3/326
    • A process for dyeing grain leather with anionic dyes under the conventional conditions for exhaustion methods, in the presence of two specific surfactants. The combined use of the two surfactants results, in the case of cationically tanned (essentially mineral-tanned) leather, in an improvement in the levelness and dye penetration and in the case of anionically tanned (synthetics-tanned or vegetable-tanned) or retanned leather, in an increase in depth of the color.The two surfactants are(a) an aliphatic alcohol of 9 to 24 carbon atoms oxyethylated with from 3 to 120 ethylene oxide units and(b) an aliphatic amine of 8 to 20 carbon atoms oxyethylated with from 6 to 80 ethylene oxide units,and they are used in a weight ratio of a:b of from 1:4 to 4:1 and in a total amount of from 0.3 to 3%, based on shaved weight.
    • 在常规条件下用阴离子染料染色谷物皮革的方法,在两种特定的表面活性剂的存在下。 在阳离子鞣制(基本上是矿物鞣制)皮革的情况下,结合使用两种表面活性剂可以改善水平度和染料渗透性,并且在阴离子鞣制(合成鞣制或植物鞣制)或重新鞣制的情况下 皮革,颜色的深度增加。 两种表面活性剂是(a)具有3至120个环氧乙烷单元氧化乙基化的9-24个碳原子的脂族醇和(b)具有6-80个环氧乙烷单元的氧乙基化的8至20个碳原子的脂族胺,并且它们 以1:4至4:1的a:b的重量比和基于剃刮重量的总量为0.3-3%使用。