发明授权
US6130320A Acid disazo dyes as well as sulphonamides as their intermediate product
失效
酸性双偶氮染料以及磺酰胺作为其中间产物
- 专利标题： Acid disazo dyes as well as sulphonamides as their intermediate product
- 专利标题（中）： 酸性双偶氮染料以及磺酰胺作为其中间产物
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申请号： US101777申请日： 1998-07-22
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公开(公告)号： US6130320A公开(公告)日： 2000-10-10
- 发明人: Gunther Lamm , Helmut Reichelt , Gerhard Wagenblast
- 申请人： Gunther Lamm , Helmut Reichelt , Gerhard Wagenblast
- 申请人地址： DEX Ludwigshafen
- 专利权人： BASF Aktiengesellschaft
- 当前专利权人： BASF Aktiengesellschaft
- 当前专利权人地址： DEX Ludwigshafen
- 优先权： DEX19602542 19960125
- 主分类号： C07D271/06
- IPC分类号： C07D271/06 ; C07C311/44 ; C07D271/10 ; C09B33/10 ; C09B62/513 ; C09B31/10
摘要：
Disazo dyes of formula (I) where one of the two symbols X.sup.1 and X.sup.2 means hydroxy and the other amino and R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are as defined in the specification. The invention also relates to sulphonamides as their intermediate products and to the use of the dyes for the dyeing of natural and synthetic substrates.
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