EP 0845790 A1 19980603 - Magnetorheological fluids and polymer coated magnetic particles
Title (en)
Magnetorheological fluids and polymer coated magnetic particles
Title (de)
Magnetorheologische Flüssigkeiten, und mit Polymer beschichteten magnetisierbaren Teilchen
Title (fr)
Fluides magnétorhéologiques et particules magnétiques revêtues d'un polymère
Publication
Application
Priority
DE 19649321 A 19961128
Abstract (en)
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).
Abstract (de)
Die Erfindung betrifft neue magnetorheologische Flüssigkeiten, ein Verfahren zu deren Herstellung und deren Verwendung sowie Verfahren zur Herstellung von mit einem organischen Polymer beschichteten magnetisierbaren Teilchen.
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)
Citation (search report)
- [DXA] US 5354488 A 19941011 - SHTARKMAN EMIL M [US], et al
- [A] WO 9410693 A1 19940511 - LORD CORP [US]
- [X] EP 0023265 A1 19810204 - BAYER AG [DE]
- [A] PATENT ABSTRACTS OF JAPAN vol. 015, no. 502 (E - 1147) 18 December 1991 (1991-12-18)
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