EP 1244514 A1 20021002 - METHOD FOR COLLECTING AND ENCAPSULATING FINE PARTICLES
Title (en)
METHOD FOR COLLECTING AND ENCAPSULATING FINE PARTICLES
Title (de)
VERFAHREN ZUR AUFNAHME SOWIE ZUM EINKAPSELN VON FEINEN TEILCHEN
Title (fr)
PROCEDE DE CAPTAGE ET D'ENCAPSULATION DE FINES PARTICULES
Publication
Application
Priority
- FR 0100030 W 20010105
- FR 0000185 A 20000107
Abstract (en)
[origin: WO0149407A1] The invention concerns a method for collecting and encapsulating with a coating agent particles dispersed in a fluid at supercritical pressure and an installation for implementing said method. Said method is characterised in that it comprises steps which consist in: expanding said fluid at a pressure less than its critical pressure, so as to bring it to a gaseous state; causing said gas to trickle down in a liquid consisting of a solution substantially saturated with the coating agent in a solvent in which the particles are insoluble, so as to extract at least partially the solvent; and causing the coating agent to precipitate onto the particles thereby forming microcapsules.
IPC 1-7
IPC 8 full level
A23L 1/00 (2006.01); A61J 3/07 (2006.01); A61K 9/50 (2006.01); B01J 3/00 (2006.01); B01J 13/02 (2006.01); B01J 13/04 (2006.01); C05G 5/00 (2006.01)
CPC (source: EP US)
A61K 9/5089 (2013.01 - EP US); B01J 13/02 (2013.01 - EP US); A61K 9/5047 (2013.01 - EP US)
Citation (search report)
See references of WO 0149407A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0149407 A1 20010712; EP 1244514 A1 20021002; FR 2803539 A1 20010713; FR 2803539 B1 20020712; JP 2003518997 A 20030617; US 2003031784 A1 20030213
DOCDB simple family (application)
FR 0100030 W 20010105; EP 01903874 A 20010105; FR 0000185 A 20000107; JP 2001549765 A 20010105; US 16911802 A 20020626