发明授权
- 专利标题： Benzopyran dyes and their intermediates
- 专利标题（中）： 苯并吡喃染料及其中间体
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申请号： US849138申请日： 1997-06-05
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公开(公告)号： US5763612A公开(公告)日： 1998-06-09
- 发明人: Helmut Reichelt , Clemens Grund , Gerhard Wagenblast
- 申请人： Helmut Reichelt , Clemens Grund , 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： DEX4443414.6 19941207
- 主分类号： C07D491/052
- IPC分类号： C07D491/052 ; C07D405/04 ; C07D491/147 ; C09B57/00 ; C09B57/02 ; D06P1/16
摘要：
Benzopyran dyes of the formula ##STR1## where n is 1 or 2, Xhu 1 is oxygen or imino, X.sup.2 is cyano or carbamoyl, R.sup.1 and R.sup.2 are independently of each other C.sub.1 -C.sub.13 -alkyl subject to the proviso that the sum total of the carbon atoms present in R.sup.1 and R.sup.2 shall be at least 10, and R.sup.3 is hydrogen, C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, halogen, cyano, nitro, carbamoyl, mono- or di(C.sub.1 -C.sub.4 -alkyl)carbamoyl, sulfamoyl or mono- or di(C.sub.1 -C.sub.4 -alkyl)sulfamoyl, are obtainable from novel iminocoumarin intermediates and useful for dyeing or printing synthetic materials.
公开/授权文献
- USD341900S Combined emergency flashlight and AM/FM radio 公开/授权日：1993-11-30
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