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    • 5. 发明授权
    • Preparation of pigments
    • 颜料的制备
    • US3775149A
    • 1973-11-27
    • US3775149D
    • 1971-11-18
    • CIBA GEIGY AG
    • LANGLEY RWARWICK W
    • C09B67/00C09B67/50C08J1/48
    • C09B67/0023C09B67/0001C09B67/0026
    • A process in which phthalocyanine pigment is produced at least 80 percent in the Beta -pigmentary form by grinding a dispersed suspension of crude pigment in aqueous medium, preferably with particulate grinding elements which are insoluble in the aqueous medium, containing from 5 to 10 percent of surface active agent until the pigment flocculates and the system is converted into a filterable paste and by recovering the pigmentary phthalocyanine from the paste by filtration, the filterable paste of the phthalocyanine pigment and the phthalocyanine pigment prepared by the process.
    • 通过在水性介质中研磨粗颜料的分散悬浮液,优选用不溶于水介质的颗粒研磨元素,其中含有5-10%的颜料,其中酞菁颜料以β-颜料形式生产至少80% 表面活性剂直到颜料絮凝,并将体系转化成可过滤的糊剂,并通过过滤从糊料中回收颜料酞菁,通过该方法制备酞菁颜料的可过滤糊剂和酞菁颜料。