EP 0845790 B1 20020710 - Magnetorheological fluids and polymer coated magnetic particles
Title (en)
Magnetorheological fluids and polymer coated magnetic particles
Title (de)
Magnetorheologische Flüssigkeiten und mit Polymer beschichtete, magnetische Teilchen
Title (fr)
Fluides magnétorhéologiques et particules magnétiques revêtues d'un polymère
Publication
Application
Priority
DE 19649321 A 19961128
Abstract (en)
[origin: EP0845790A1] Magneto-rheological fluid consists of magnetisable particles of an oleophilic fluid and optionally a thickener. The magnetisable particles are coated with an organic polymer. Also claimed is the production of the magnetisable particles coated with polymer comprising silanizing the particles by reacting with a silane of formula: R1-Si((R2)a)(X2)3a (where R1 = 1-20C alkyl or 2-20C alkylene optionally substituted wit an amino, isocyanate, methacryloxy, acryloyloxy, epoxy or mercapto group and/or interrupted by O, NH, COO or NHCOO; R2 = phenyl, or 1-6C alkyl; X = hydrolysable group; and a = 0-2).
IPC 1-7
IPC 8 full level
CPC (source: EP US)
H01F 1/061 (2013.01 - EP US); H01F 1/447 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0845790 A1 19980603; EP 0845790 B1 20020710; DE 59707683 D1 20020814; JP H10163021 A 19980619; KR 19980042844 A 19980817; US 5989447 A 19991123
DOCDB simple family (application)
EP 97120063 A 19971117; DE 59707683 T 19971117; JP 33824597 A 19971125; KR 19970063473 A 19971127; US 97655597 A 19971124