发明授权
US5869731A Method for reducing the toxicity of spent liquors and novel cationic dyes
失效
降低废液和新型阳离子染料毒性的方法
- 专利标题： Method for reducing the toxicity of spent liquors and novel cationic dyes
- 专利标题（中）： 降低废液和新型阳离子染料毒性的方法
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申请号： US937289申请日： 1997-09-25
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公开(公告)号： US5869731A公开(公告)日： 1999-02-09
- 发明人: Henry Giera , Felix Reichel , Horst Berneth
- 申请人： Henry Giera , Felix Reichel , Horst Berneth
- 申请人地址： DEX Leverkusen
- 专利权人： Bayer Aktiengesellschaft
- 当前专利权人： Bayer Aktiengesellschaft
- 当前专利权人地址： DEX Leverkusen
- 优先权： DEX19524134.7 19950703
- 主分类号： C07D249/06
- IPC分类号： C07D249/06 ; C07D213/38 ; C07D231/56 ; C07D249/14 ; C07D277/20 ; C07D277/50 ; C07D409/04 ; C09B23/14 ; C09B23/16 ; C09B26/04 ; C09B44/10 ; C09B44/20 ; C09B55/00 ; C09B57/00 ; D06P1/00 ; D06P1/41 ; C09D11/00 ; D06P3/32 ; D21H21/28
摘要：
There has been found1) a method for reducing the toxicity of spent liquors from dyeing with cationic dyes or mixtures thereof, characterized by the step of dyeing with cationic dyes having a computed electrostatic shielding energy (idealized hydration energy) of .gtoreq.50 kcal/mol,2) cationic, generally low toxicity dyes, their preparation and use for dyeing.
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