发明名称 |
Stable 3,3'-dichlorobenzidine dihydrochloride suspension |
摘要 |
By means of a 3,3'-dichlorobenzidine dihydrochloride suspension in hydrochloric acid, comprising the components a) 35 to 63.5% by weight of 3,3'-dichlorobenzidine dihydrochloride; b) 11 to 24% by weight of hydrogen chloride; c) and 25 to 55% by weight of-water, in each case relative to the total weight of the suspension (100% by weight) and with the proviso that the components a), b) and c) together make 100% by weight; and whose viscosity is in the range from 80 to 1400 mPa.s, 3,3'-dichlorobenzidine dihydrochloride can be stably suspended in hydrochloric acid at high concentration and consequently low water content and at the same time a suspension having low viscosity can be obtained, so that the slurry flows out of containers without problems even after relatively long static storage.
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申请公布号 |
US5417881(A) |
申请公布日期 |
1995.05.23 |
申请号 |
US19930150418 |
申请日期 |
1993.11.10 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
STEIDL, DIETER;DOPFER, PETER;EBERTZ, WOLFGANG;SCHUTT, ERNST |
分类号 |
C07C209/90;C07C211/52;C09B41/00;(IPC1-7):B01J13/00;C09D11/00;C09K3/00 |
主分类号 |
C07C209/90 |
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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