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    • 10. 发明授权
    • Process for the preparation of 4,10-dibromoanthanthrone pigment
    • 制备4,10-二溴蒽醌颜料的方法
    • US5614015A
    • 1997-03-25
    • US528145
    • 1995-09-14
    • Manfred UrbanGerhard Wilker
    • Manfred UrbanGerhard Wilker
    • C09B67/20C09B3/66C08K5/00
    • C09B3/66
    • A process for the preparation of 4,10-dibromoanthanthrone pigment, which comprises first subjecting the crude 4,10-dibromoanthanthrone pigment, which is in the coarsely crystalline state, to wet milling in an aqueous medium in a stirred ball mill which is operated at a power density of more than 2.5 kW per liter of milling space and at a peripheral stirrer speed of more than 12 m/s under the action of grinding media with a diameter of less than 1.0 mm, until the desired degree of fine division is reached (millbase suspension), and then isolating the resulting pigment in a conventional manner; or subjecting the prepigment obtained in the wet milling to a treatment at elevated temperature (finish) in an aqueous medium, an aqueous-organic medium or a liquid aromatic compound, and then isolating the pigment.
    • 制备4,10-二溴蒽醌颜料的方法,其包括首先使处于粗结晶状态的粗制4,10-二溴蒽醌颜料在水性介质中在搅拌球磨机中湿磨,该搅拌球磨机在 功率密度大于2.5kW /升研磨空间,并且在直径小于1.0mm的研磨介质的作用下,在超过12m / s的外围搅拌器速度下,直到达到所需的细分数 (磨浆悬浮液),然后以常规方式分离所得颜料; 或者在湿法研磨中得到的标号在水性介质,含水有机介质或液态芳香族化合物中在升高的温度(光洁度)下进行处理,然后分离颜料。