EP 0994823 A1 20000426 - PROCESS FOR THE PREPARATION OF LEAD ZIRCONATE TITANATE COMPOUNDS
Title (en)
PROCESS FOR THE PREPARATION OF LEAD ZIRCONATE TITANATE COMPOUNDS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON BLEI ZIRKONATE TITANATE VERBINDUNGEN
Title (fr)
PROCEDE DE PREPARATION DE COMPOSES DE TITANATE ZIRCONATE DE PLOMB
Publication
Application
Priority
- GB 9801979 W 19980703
- GB 9714150 A 19970705
Abstract (en)
[origin: WO9901379A1] A process for producing a lead zirconate titanate compound, which involves the combination of an aqueous solution of a lead salt with a titanium alkoxide compound, followed by the addition of concentrated nitric acid, an aqueous solution of a zirconium salt, and an excess of oxalic acid to yield an oxalate. The pH of the solution containing the oxalate is adjusted by the use of ammonia or an amine, before the oxalate is calcined to yield the lead zirconate titanate compound.
IPC 1-7
IPC 8 full level
C01G 25/00 (2006.01)
CPC (source: EP)
C01G 25/006 (2013.01); C01P 2002/34 (2013.01)
Citation (search report)
See references of WO 9901379A1
Designated contracting state (EPC)
DE ES FR GB NL
DOCDB simple family (publication)
WO 9901379 A1 19990114; EP 0994823 A1 20000426; GB 9714150 D0 19970910
DOCDB simple family (application)
GB 9801979 W 19980703; EP 98932376 A 19980703; GB 9714150 A 19970705