发明名称 |
VERFAHREN ZUR HERSTELLUNG VON SUBSTITUIERTEN 4,4'-DIAMINOSTILBEN-2,2'-DISULFONSÄURESALZEN |
摘要 |
PCT No. PCT/EP96/03357 Sec. 371 Date Jan. 22, 1999 Sec. 102(e) Date Jan. 22, 1999 PCT Filed Jul. 31, 1996 PCT Pub. No. WO98/05653 PCT Pub. Date Feb. 12, 1998In the preparation of substituted 4,4'-diaminostilbene-2,2'-disulfonic acid salts a clear increase in the reaction rate may be achieved by carrying out the reaction of the tetrachlorine derivative (III) with the aniline (IV) in the presence of the amine (VI) as acid-absorber. |
申请公布号 |
DE59608718(D1) |
申请公布日期 |
2002.03.21 |
申请号 |
DE1996508718 |
申请日期 |
1996.07.31 |
申请人 |
BAYER AG |
发明人 |
FELDHUES, ULRICH;ECKSTEIN, UDO;VOGT, UWE;BROCKMANN, ROLF |
分类号 |
C07D251/68;D06L3/12 |
主分类号 |
C07D251/68 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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