发明授权
US3927965A Direct and acid dyes with the same dye chlorine decolored as leveller
失效
直接和酸性染料与染色剂相同，染色剂与调色剂脱色
- 专利标题： Direct and acid dyes with the same dye chlorine decolored as leveller
- 专利标题（中）： 直接和酸性染料与染色剂相同，染色剂与调色剂脱色
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申请号： US42536873申请日： 1973-12-17
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公开(公告)号： US3927965A公开(公告)日： 1975-12-23
- 发明人: LASAS LONGINAS
- 申请人： UNITED STATES GYPSUM CO
- 专利权人： United States Gypsum Co
- 当前专利权人： United States Gypsum Co
- 优先权： US42536873 1973-12-17; US27196772 1972-07-14
- 主分类号： C02F1/76
- IPC分类号： C02F1/76 ; D06P1/00 ; D06P5/00
摘要：
A novel solution obtained from a process for treating dyehouse waste water, containing leftover dyestuff, for reclamation and reuse for consecutive dyeing and/or rinsing or the like, in which halogen, such as gaseous chlorine, is added to decolorize the chromophoric functional group of the dyestuff. The decolorized waste water is then recycled into the dyeing system to form the present solution.
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