发明名称 |
Process for the preparation of 1,5-dichloroanthraquinone |
摘要 |
A process has been invented for the preparation of 1,5-dichloroanthraquinone which comprises reacting 1,5-dichloroanthraquinone with chlorine in the presence of at least 50% by weight of liquid phthalic anhydride, relative to the weight of 1,5-dinitroanthraquinone employed. The 1,5-dichloroanthraquinone is known to be a valuable starting material for the preparation of various dyestuffs.
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申请公布号 |
US4206130(A) |
申请公布日期 |
1980.06.03 |
申请号 |
US19780898262 |
申请日期 |
1978.04.20 |
申请人 |
BAYER AG |
发明人 |
HERZOG, HELMUT;HOHMANN, WALTER;SEIDLER, HELMUT |
分类号 |
C07C50/24;C07C45/00;C07C67/00;(IPC1-7):C07C49/68 |
主分类号 |
C07C50/24 |
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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