EP 1814825 A2 20070808 - A METHOD FOR PRODUCING IRON OXIDE NANO PARTICLES
Title (en)
A METHOD FOR PRODUCING IRON OXIDE NANO PARTICLES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON EISENOXIDNANOPARTIKELN
Title (fr)
PROCÉDÉ DESTINÉ À PRODUIRE DES NANOPARTICULES D'OXYDE DE FER
Publication
Application
Priority
- IL 2005000683 W 20050627
- IL 16274204 A 20040627
- IL 16722505 A 20050303
- IL 16938405 A 20050623
Abstract (en)
[origin: WO2006001018A2] The invention provides a method for the formation of small-size iron oxide particles comprising the steps of preparing a starting aqueous solution comprising at least one of ferric ions and complexes thereof, at a concentration of at least 0.1% w/w iron and a pH greater than about 1.5; maintaining said solution at a temperature lower than 55°C for a retention time in which hydrolysis takes place, the extent of said hydrolysis being sufficient to decrease the pH by at least 0.2 units, wherein said time does not exceed 14 days, to form a system containing a modified solution; and adjusting the conditions in said system by at least one of the steps of heating the modified solution to elevate the temperature thereof by at least 10°C; elevating the pH of the modified solution by at least 0.3 units; and diluting the modified solution by at least 20%; whereby there are formed particles, wherein the majority of the particles formed are between about 2nm and about 500nm in size.
IPC 8 full level
C01G 49/08 (2006.01)
CPC (source: EP KR)
B82B 3/00 (2013.01 - KR); B82Y 30/00 (2013.01 - EP); C01G 49/02 (2013.01 - EP KR); C01G 49/06 (2013.01 - EP); C01G 49/08 (2013.01 - KR); C09C 1/24 (2013.01 - EP KR); C01P 2002/04 (2013.01 - EP); C01P 2004/12 (2013.01 - EP); C01P 2004/32 (2013.01 - EP); C01P 2004/62 (2013.01 - EP); C01P 2004/64 (2013.01 - EP); C01P 2006/12 (2013.01 - EP)
Citation (search report)
See references of WO 2006001018A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2006001018 A2 20060105; WO 2006001018 A3 20060622; WO 2006001018 B1 20060824; AU 2005257059 A1 20060105; BR PI0511319 A 20071204; CA 2572190 A1 20060105; EA 200700135 A1 20070831; EP 1814825 A2 20070808; JP 2008504202 A 20080214; KR 20070044817 A 20070430; MX 2007000357 A 20080313; NO 20070512 L 20070215
DOCDB simple family (application)
IL 2005000683 W 20050627; AU 2005257059 A 20050627; BR PI0511319 A 20050627; CA 2572190 A 20050627; EA 200700135 A 20050627; EP 05756032 A 20050627; JP 2007517653 A 20050627; KR 20067027448 A 20061227; MX 2007000357 A 20050627; NO 20070512 A 20070126