EP1918944A3 - Magnetorheological Fluid (MRF) - Google Patents

Magnetorheological Fluid (MRF) Download PDF

Info

Publication number
EP1918944A3
EP1918944A3 EP07119395A EP07119395A EP1918944A3 EP 1918944 A3 EP1918944 A3 EP 1918944A3 EP 07119395 A EP07119395 A EP 07119395A EP 07119395 A EP07119395 A EP 07119395A EP 1918944 A3 EP1918944 A3 EP 1918944A3
Authority
EP
European Patent Office
Prior art keywords
magnetorheological fluid
mrf
stabilizing agent
viscosity modifier
styrene
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07119395A
Other languages
German (de)
French (fr)
Other versions
EP1918944A2 (en
Inventor
Juan de Dios García Lopéz Durán
Fernando González Caballero
Angel Vicente Delgado Mora
Guillermo Ramón Iglesias
Modesto Torcuato Lopez Lopez
María Luisa Jiménez Olivares
Luis Fernández Ruiz-Moron
Jorge Insa Monesma
Eduardo Romero Palazón
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Repsol SA
Original Assignee
Repsol YPF SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Repsol YPF SA filed Critical Repsol YPF SA
Publication of EP1918944A2 publication Critical patent/EP1918944A2/en
Publication of EP1918944A3 publication Critical patent/EP1918944A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
    • H01F1/447—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids characterised by magnetoviscosity, e.g. magnetorheological, magnetothixotropic, magnetodilatant liquids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M143/00—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
    • C10M143/10—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation containing aromatic monomer, e.g. styrene

Abstract

Magnetorheological fluid composed of magnetic particles dispersed in a liquid phase which comprises a base oil, a viscosity modifier, and a stabilizing agent.
Particularly the viscosity modifier is a styrene-fumarate copolymer and the stabilizing agent is aluminium stearate.
EP07119395A 2006-10-26 2007-10-26 Magnetorheological Fluid (MRF) Withdrawn EP1918944A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200602735A ES2301390B1 (en) 2006-10-26 2006-10-26 MAGNETORREOLOGICAL FLUID (FMR).

Publications (2)

Publication Number Publication Date
EP1918944A2 EP1918944A2 (en) 2008-05-07
EP1918944A3 true EP1918944A3 (en) 2008-10-08

Family

ID=39110640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07119395A Withdrawn EP1918944A3 (en) 2006-10-26 2007-10-26 Magnetorheological Fluid (MRF)

Country Status (2)

Country Link
EP (1) EP1918944A3 (en)
ES (1) ES2301390B1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5683615A (en) * 1996-06-13 1997-11-04 Lord Corporation Magnetorheological fluid
WO2002045102A1 (en) * 2000-11-29 2002-06-06 The Adviser Defence Research & Development Organisation, Ministry Of Defence, Government Of India A magnetorheological fluid composition and a process for preparation thereof
US20030006395A1 (en) * 2000-07-31 2003-01-09 Katsuhiko Hata Stably dispersed magnetic viscous fluid
US20040084263A1 (en) * 2002-11-06 2004-05-06 Lord Corporation MR device
WO2004042747A1 (en) * 2002-11-01 2004-05-21 Lord Corporation Magnetorheological composition and device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020171067A1 (en) * 2001-05-04 2002-11-21 Jolly Mark R. Field responsive shear thickening fluid
JP4683185B2 (en) * 2004-11-05 2011-05-11 戸田工業株式会社 Magnetorheological fluid

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5683615A (en) * 1996-06-13 1997-11-04 Lord Corporation Magnetorheological fluid
US20030006395A1 (en) * 2000-07-31 2003-01-09 Katsuhiko Hata Stably dispersed magnetic viscous fluid
WO2002045102A1 (en) * 2000-11-29 2002-06-06 The Adviser Defence Research & Development Organisation, Ministry Of Defence, Government Of India A magnetorheological fluid composition and a process for preparation thereof
WO2004042747A1 (en) * 2002-11-01 2004-05-21 Lord Corporation Magnetorheological composition and device
US20040084263A1 (en) * 2002-11-06 2004-05-06 Lord Corporation MR device

Also Published As

Publication number Publication date
EP1918944A2 (en) 2008-05-07
ES2301390A1 (en) 2008-06-16
ES2301390B1 (en) 2009-06-08

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