EP 2870612 A1 20150513 - MAGNETIC CORE-SHELL PARTICLES WITH HIGH SEPARATION EFFICIENCY
Title (en)
MAGNETIC CORE-SHELL PARTICLES WITH HIGH SEPARATION EFFICIENCY
Title (de)
MAGNETISCHE KERN-SCHALE-PARTIKEL MIT HOHER ABTRENNUNGSEFFIZIENZ
Title (fr)
PARTICULES MAGNÉTIQUES À STRUCTURE C UR-COQUILLE À HAUT RENDEMENT DE SÉPARATION
Publication
Application
Priority
- DE 102012211947 A 20120709
- EP 2013062558 W 20130618
Abstract (en)
[origin: WO2014009107A1] The invention relates to functionalized magnetic core-shell particles which are predominantly present in the form of insulated, substantially spherical individual particles, the core of which substantially consists of one or more magnetic iron oxides, the shell of which substantially consists of dense amorphous silicon dioxide, the functionality of which consists in that the surface of the particles has units of amino or epoxy groups, and which have an average diameter d50 of 2<d50<10 µm. The particles have an iron oxide content of 83 to 92 wt.%, a silicon dioxide content of 5 to 15 wt.%, and a carbon content of 0.5 to 3 wt.%. The amino or the epoxy groups are a component of the structural unit -OSi-alkyl-X, wherein X equals NH2 or is an epoxy, and the alkyl is C2-C8. The concentration of the amino groups or of the epoxy groups is at least 30 µmol/g particles. The particles are used to immobilize enzymes.
IPC 8 full level
H01F 1/00 (2006.01); C01G 49/00 (2006.01); C09C 1/24 (2006.01); H01F 1/36 (2006.01)
CPC (source: EP KR US)
B01J 20/06 (2013.01 - EP US); B01J 20/22 (2013.01 - EP US); B01J 20/28009 (2013.01 - EP US); B01J 20/28016 (2013.01 - EP US); B01J 20/3293 (2013.01 - EP US); B05D 1/02 (2013.01 - US); C01G 49/02 (2013.01 - EP KR US); C01G 49/08 (2013.01 - EP KR US); C09C 1/24 (2013.01 - EP KR US); C12N 11/02 (2013.01 - US); H01F 1/0054 (2013.01 - EP KR US); H01F 1/36 (2013.01 - EP KR US); C01P 2004/61 (2013.01 - EP KR US); C01P 2004/62 (2013.01 - EP KR US); C01P 2004/84 (2013.01 - EP KR US); C01P 2004/86 (2013.01 - EP KR US); C01P 2006/12 (2013.01 - EP KR US); C01P 2006/42 (2013.01 - EP KR US); C01P 2006/80 (2013.01 - EP US)
Citation (search report)
See references of WO 2014009107A1
Designated contracting state (EPC)
AL 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 RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102012211947 A1 20140109; CN 104335298 A 20150204; EP 2870612 A1 20150513; KR 20150028290 A 20150313; US 2015209756 A1 20150730; WO 2014009107 A1 20140116
DOCDB simple family (application)
DE 102012211947 A 20120709; CN 201380029314 A 20130618; EP 13729944 A 20130618; EP 2013062558 W 20130618; KR 20157000435 A 20130618; US 201314413608 A 20130618