发明名称 |
Process for preparing perylene-3,4,9,10-tetracarboxylic diimide in transparent pigment form |
摘要 |
The present invention provides a process for preparing transparent perylimide pigments of the formula (I) in which u is a number from 0 to 8 and, if u>0, E is a chlorine or bromine atom and, where u>1, may be a combination thereof, which comprises wet-grinding a crude perylimide pigment in a liquid medium in a stirred ballmill operated at a power density of from 1.0 kW per liter of milling space and at a stirrer tip speed of more than 12 m/s under the action of grinding media having a diameter of less than or equal to 0.9 mm, and isolating the resulting pigment.
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申请公布号 |
US2003105325(A1) |
申请公布日期 |
2003.06.05 |
申请号 |
US20020323070 |
申请日期 |
2002.12.18 |
申请人 |
CLARIANT GMBH |
发明人 |
WEBER JOACHIM;WILKER GERHARD;URBAN MANFRED;BOHMER MARTIN;DIETZ ERWIN |
分类号 |
B01F17/16;C09B5/62;C09B67/00;C09B67/04;C09B67/20;(IPC1-7):C09B57/00;C07D471/02 |
主分类号 |
B01F17/16 |
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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