Process for colour neutralizing compositions
    23.
    发明授权
    Process for colour neutralizing compositions 有权
    彩色中和组合物的方法

    公开(公告)号:US08435412B2

    公开(公告)日:2013-05-07

    申请号:US12861101

    申请日:2010-08-23

    IPC分类号: C02F1/00

    摘要: The present application relates to a process of color neutralizing treatment liquids, wherein the treatment liquid comprises a chromophore selected from the group consisting of monoazo, triarylmethane, xanthene, anthraquinone, hydrophobic dyes, and mixtures thereof, wherein the hydrophobic dyes are selected from the group consisting of benzodifuranes; methine; triphenylmethanes; naphthalimides; pyrazole; naphthoquinone; mono-azo, di-azo dyes and mixtures thereof, said process comprising the steps of: i. providing a mixing vessel with the treatment composition comprising the chromophore; ii. providing to the mixing vessel more than 0.045% of a reducing agent selected from the group consisting of sulfite, thiodiurea, formaldehyde bisulfite formaldehyde sulfoxilate and mixtures thereof; and iii. mixing until discolouration by color neutralization of the chromophore is achieved.

    摘要翻译: 本申请涉及一种颜色中和处理液的方法,其中处理液包含选自单偶氮,三芳基甲烷,呫吨,蒽醌,疏水性染料及其混合物的发色团,其中疏水性染料选自 由苯并二呋喃组成; 次甲基 三苯甲烷 萘二胺 吡唑 萘醌; 单偶氮,偶氮染料及其混合物,所述方法包括以下步骤:i。 提供具有包含发色团的处理组合物的混合容器; ii。 向混合容器提供大于0.045%的选自亚硫酸盐,硫代脲,甲醛亚硫酸氢盐甲醛次硫酸盐的还原剂及其混合物; 和iii。 混合直到通过发色团的颜色中和变色。