发明名称 |
Preparation of metal halide phosphor particles of selected particle size range with improved powder flowability. |
摘要 |
A method for preparing metal halide phosphor particles, e.g. barium- and/or strontium-containing halide phosphor particles, of a selected particle size range with improved powder flowability which method comprises the following steps : (1) firing the raw mixture materials of said phosphor to produce a sintered phosphor mass that is pulverized, (2) mixing said pulverized phosphor mass, optionally after one or more firings, in a liquid mainly containing a water-miscible organic solvent with an organic acid dissolved therein, said acid being capable of forming with metal contained in the phosphor a salt the solubility of which in water at 20 DEG C is less than 0.5 g per 100 ml, and (3) subjecting the thus treated phosphor particles in wet and/or in dry state to a separation treatment to collect phosphor particles having a grain size smaller than 40 mu m but larger than 2 mu m.
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申请公布号 |
EP0614961(A1) |
申请公布日期 |
1994.09.14 |
申请号 |
EP19930200668 |
申请日期 |
1993.03.09 |
申请人 |
AGFA-GEVAERT NAAMLOZE VENNOOTSCHAP |
发明人 |
LEBLANS, PAUL C/O AGFA-GEVAERT N.V. DIE 3800;LARDON, PAUL C/O AGFA-GEVAERT N.V. DIE 3800 |
分类号 |
C09K11/08;C01F17/00;C09K11/61;C09K11/77;(IPC1-7):C09K11/61 |
主分类号 |
C09K11/08 |
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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