EP 2384309 A1 20111109 - CERIUM AND/OR TERBIUM PHOSPHATE OPTIONALLY WITH LANTHANUM, PHOSPHOR RESULTING FROM SAID PHOSPHATE AND METHOD FOR PREPARING SAME
Title (en)
CERIUM AND/OR TERBIUM PHOSPHATE OPTIONALLY WITH LANTHANUM, PHOSPHOR RESULTING FROM SAID PHOSPHATE AND METHOD FOR PREPARING SAME
Title (de)
CER- UND/ODER TERBIUMPHOSPHAT, GEGEBENENFALLS MIT LANTHAN, DARAUS RESULTIERENDER LEUCHTSTOFF UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
PHOSPHATE DE CÉRIUM ET/OU DE TERBIUM, ÉVENTUELLEMENT AVEC DU LANTHANE, LUMINOPHORE ISSU DE CE PHOSPHATE ET PROCÉDÉS DE PRÉPARATION DE CEUX-CI
Publication
Application
Priority
- EP 2009065388 W 20091118
- FR 0806504 A 20081120
Abstract (en)
[origin: WO2010057918A1] The invention relates to a rare earth (Ln) phosphate, Ln being either at least one rare earth selected from cerium and terbium, or lanthanum in combination with at least one of the two above-mentioned rare earths, that has a crystalline structure of the monazite type with a potassium content of 6000 ppm at most. The phosphate is obtained by the precipitation of a rare earth chloride at a constant pH lower than 2, by calcination at a temperature of at least 700°C and by redispersion in hot water. The invention also relates to a phosphor obtained by the calcination at at least 1000°C of said phosphate.
IPC 8 full level
C01B 25/37 (2006.01); C01B 25/45 (2006.01); C09K 11/81 (2006.01)
CPC (source: EP KR US)
C01B 25/37 (2013.01 - EP KR US); C01B 25/45 (2013.01 - EP KR US); C09K 11/7778 (2013.01 - EP KR US); Y10T 428/2982 (2015.01 - EP US)
Citation (search report)
See references of WO 2010057918A1
Citation (examination)
GB 2124243 A 19840215 - MITSUBISHI ELECTRIC CORP
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
FR 2938524 A1 20100521; FR 2938524 B1 20110107; CA 2741976 A1 20100527; CA 2741976 C 20140121; CN 102216211 A 20111012; CN 102216211 B 20150715; EP 2384309 A1 20111109; JP 2012509240 A 20120419; JP 5635994 B2 20141203; KR 101342189 B1 20131216; KR 101495454 B1 20150223; KR 20110079727 A 20110707; KR 20130081306 A 20130716; US 2011272632 A1 20111110; WO 2010057918 A1 20100527
DOCDB simple family (application)
FR 0806504 A 20081120; CA 2741976 A 20091118; CN 200980146349 A 20091118; EP 09752384 A 20091118; EP 2009065388 W 20091118; JP 2011536852 A 20091118; KR 20117011444 A 20091118; KR 20137013888 A 20091118; US 200913129652 A 20091118