EP 1797006 A2 20070620 - METHOD FOR PRODUCTION OF NANOPARTICLES WITH CUSTOM SURFACE CHEMISTRY AND CORRESPONDING COLLOIDS
Title (en)
METHOD FOR PRODUCTION OF NANOPARTICLES WITH CUSTOM SURFACE CHEMISTRY AND CORRESPONDING COLLOIDS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON NANOPARTIKELN MIT MASSGESCHNEIDERTER OBERFLÄCHENCHEMIE UND ENTSPRECHENDEN KOLLOIDEN
Title (fr)
PROCEDE DE PRODUCTION DE NANOPARTICULES A CHIMIE DE SURFACE SUR MESURE ET COLLOIDES CORRESPONDANTS
Publication
Application
Priority
- EP 2005010643 W 20051003
- DE 102004048230 A 20041004
Abstract (en)
[origin: WO2006037591A2] The invention relates to a method for production of a suspension of crystalline and/or consolidated, surface-modified, nanoscale particles in a dispersant, whereby said method comprises the following steps: a) a suspension of amorphous or partly-crystalline, non-surface-modified nanoscale particles is thermally-treated in a dispersant to crystallize and/or consolidate the particles and b) the suspension of the crystallised and/or consolidated non-surface-modified, nanoscale particles in the dispersant from (a) or in another dispersant is activated by mechanical stress in the presence of a modifier, such that the particles are surface-modified by the modifier to give a suspension of crystalline and/or consolidated surface-modified nanoscale particles. The dispersant can be removed from the obtained colloid to give the corresponding powder. Said method provides highly-dispersed particles with an average particle diameter of less than 20 nm which can be provided with a custom surface chemistry in a simple manner for the relevant application.
IPC 8 full level
C01G 25/00 (2006.01); B01J 2/00 (2006.01); C01G 25/02 (2006.01); C04B 35/622 (2006.01); C09C 1/00 (2006.01); C09K 23/00 (2022.01)
CPC (source: EP KR US)
B82B 3/00 (2013.01 - KR); B82Y 30/00 (2013.01 - EP US); C01G 1/00 (2013.01 - EP US); C01G 1/02 (2013.01 - EP US); C01G 25/02 (2013.01 - EP US); C04B 35/486 (2013.01 - EP US); C04B 35/6261 (2013.01 - EP US); C04B 35/62625 (2013.01 - EP US); C04B 35/6263 (2013.01 - EP US); C04B 35/62655 (2013.01 - EP US); C04B 35/63 (2013.01 - EP US); C04B 35/632 (2013.01 - EP US); C09C 1/00 (2013.01 - EP US); C09C 3/08 (2013.01 - EP US); B82Y 30/00 (2013.01 - KR); C01P 2002/72 (2013.01 - EP US); C01P 2004/64 (2013.01 - EP US); C04B 2235/3225 (2013.01 - EP US); C04B 2235/441 (2013.01 - EP US)
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 LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
DE 102004048230 A1 20060406; BR PI0515853 A 20080916; CN 101124166 A 20080213; EP 1797006 A2 20070620; JP 2008515747 A 20080515; KR 20070098781 A 20071005; MX 2007004093 A 20070615; TW 200613215 A 20060501; US 2009004098 A1 20090101; WO 2006037591 A2 20060413; WO 2006037591 A3 20061228
DOCDB simple family (application)
DE 102004048230 A 20041004; BR PI0515853 A 20051003; CN 200580033638 A 20051003; EP 05790372 A 20051003; EP 2005010643 W 20051003; JP 2007533960 A 20051003; KR 20077007657 A 20070403; MX 2007004093 A 20051003; TW 94132125 A 20050916; US 57447105 A 20051003