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    • 5. 发明专利
    • DECOLORANT FOR CLOTHING AND DECOLORING OF CLOTHING
    • JP2000265363A
    • 2000-09-26
    • JP31088299
    • 1999-11-01
    • KIM YONG CHOL
    • KIM YONG-CHOL
    • D06L4/30D06M11/00D06P5/13D06L3/10
    • PROBLEM TO BE SOLVED: To obtain a decolorant for clothing excellent in decoloring of all kinds of clothes such as colored by a direct reactive dye and to provide decoloring method for clothing and capable of partially or selectively decoloring hue of the clothes by splaying the decolorant for the clothing. SOLUTION: This decoloring for clothing comprises the first step wherein the clothing is dyed with a vinyl sulfone-based reactive dye, the second step wherein the dyed clothing is treated to have water-repellency with a silicone- based water repellant, the third step wherein a decolorant having a composition containing 24-32 wt.% amide formaldehyde sulfoxylic acid salt of a reductive decolorant, 65-75 wt.% water, 0.4-1 wt.% pigment for identifying undecolorizable with the above decolorant, 0.2-0.5 wt.% glycerol and, if necessary, 0.4-1 wt.% potassium hydrogencarbonate is sprayed, the fourth step wherein the clothing sprayed with the decolorant for clothing is treated with steam and the fifth step wherein remaining reductant and the pigment for identifying are removed from the steam-treated clothing by water washing and dehydration, followed by the drying of the clothing.