发明名称 |
Werkwijze voor vervaardigen van een fosfaat van de lanthaniden en daaruit vervaardigd fosfaat. |
摘要 |
Producing lanthanide phosphates comprises mixing a rare earth metal salt solution with a phosphate solution at a pH of 0-1 in a first precipitation step and then increasing the pH to more than 2 in a second precipitation step. Independent claims are also included for: (1) phosphate produced as above followed by washing, sieving, drying and calcining at 800-1000[deg]C; (2) luminescent material produced from a phosphate as above by heating above 1000[deg]C, especially using an alkali metal or boron flux. |
申请公布号 |
NL1027790(A1) |
申请公布日期 |
2005.06.20 |
申请号 |
NL20041027790 |
申请日期 |
2004.12.15 |
申请人 |
PATENT-TREUHAND-GESELLSCHAFT FUER ELEKTRISCHE GLUEHLAMPEN MBH |
发明人 |
ULRICH MUELLER;DIETER SCHMIDT;MARTIN ZACHAU;FRANZ ZWASCHKA |
分类号 |
C01B25/37;C01B25/45;C09K11/08;C09K11/77;C09K11/81;(IPC1-7):C01B25/45;H01J61/44 |
主分类号 |
C01B25/37 |
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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