发明授权
US4377535A Process for the preparation of nitro-T-acid
(8-nitro-naphthalene-1,3,6-trisulphonic acid)
失效
制备硝基-T-酸（8-硝基 - 萘-1,3,6-三磺酸）的方法
- 专利标题： Process for the preparation of nitro-T-acid (8-nitro-naphthalene-1,3,6-trisulphonic acid)
- 专利标题（中）： 制备硝基-T-酸（8-硝基 - 萘-1,3,6-三磺酸）的方法
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申请号： US219615申请日： 1980-12-24
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公开(公告)号： US4377535A公开(公告)日： 1983-03-22
- 发明人: Reinhard Kaiser , Horst Behre , Jurgen Dammann , Rolf Putter , Axel Vogel
- 申请人： Reinhard Kaiser , Horst Behre , Jurgen Dammann , Rolf Putter , Axel Vogel
- 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： DEX2837498 19780828
- 主分类号： C07C309/40
- IPC分类号： C07C309/40 ; C07C67/00 ; C07C301/00 ; C07C303/22 ; C07C143/55 ; C07B11/00
摘要：
A process has been provided for the preparation of nitro-T-acid by nitration of naphthalene-1,3,6-trisulphonic acid from a nitration mixture which has reacted to the extent of at least 80% which naphthalene-1,3,6-trisulphonic acid or a mixture containing the latter. Nitro-T-acid (and T-acid) is an intermediate for the preparation of H-acid which, in turn, is an intermediate for the preparation of dyestuffs.
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