发明授权
- 专利标题： Process for preparing aminoanthraquinones
- 专利标题（中）： 制备氨基蒽醌的方法
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申请号： US641832申请日： 1975-12-18
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公开(公告)号： US4046785A公开(公告)日： 1977-09-06
- 发明人: Yutaka Hirai , Katsuharu Miyata , Tagui Osawa , Muneyasu Samecima , Ken Mukai , Koichi Yoshiura , Hidetoshi Mori
- 申请人： Yutaka Hirai , Katsuharu Miyata , Tagui Osawa , Muneyasu Samecima , Ken Mukai , Koichi Yoshiura , Hidetoshi Mori
- 申请人地址： JA Tokyo
- 专利权人： Mitsui Toatsu Chemicals, Inc.
- 当前专利权人： Mitsui Toatsu Chemicals, Inc.
- 当前专利权人地址： JA Tokyo
- 优先权： JA49-145615 19741220
- 主分类号： C09B1/22
- IPC分类号： C09B1/22 ; C07C225/34 ; C07C227/04 ; C07C229/74 ; C09B1/503 ; C09B1/54 ; C09B1/16 ; C09B1/36 ; C09B1/50
摘要：
A process for preparing aminoanthraquinones of high purity, which comprises catalytically hydrogenating nitroanthraquinones in the suspended state in an aqueous medium in the presence of a hydrogenating catalyst. In a preferred embodiment, the catalytic hydrogenation may be carried out in the presence of an organic or inorganic base, followed, if desired, by oxidizing the hydrogenation product.
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