Title:
ELECTRORHEOLOGICAL FLUID AND CYLINDER DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/246100
Kind Code:
A1
Abstract:
Provided are an electrorheological fluid having high yield stress at high temperatures, and a cylinder device. An electrorheological fluid 100 according to the present invention is characterized by containing a fluid 101 and polyurethane particles 102 formed of an isocyanate and a polyol, and is characterized in that the polyurethane particles 102 contain metal ions, and the equivalent ratio of the isocyanate forming the polyurethane particles 102 is 0.95-1.5.
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Inventors:
TAKAHASHI HITOMI (JP)
ISHII SATOSHI (JP)
OKADA TOMOHIRO (JP)
ISHII SATOSHI (JP)
OKADA TOMOHIRO (JP)
Application Number:
PCT/JP2021/017375
Publication Date:
December 09, 2021
Filing Date:
May 06, 2021
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
C08G18/00; C08G18/48; C08K3/00; C08K3/08; C08L75/04; C08L75/08; C10M149/14; F16F9/46; F16F9/53; C10N10/02; C10N20/00; C10N30/00; C10N40/06; C10N40/14
Domestic Patent References:
| WO2019035330A1 | 2019-02-21 |
Foreign References:
| JP2018521165A | 2018-08-02 | |||
| JPH04255795A | 1992-09-10 | |||
| JPH1081758A | 1998-03-31 | |||
| JP2015511643A | 2015-04-20 | |||
| JP2013127013A | 2013-06-27 | |||
| JPH03255193A | 1991-11-14 | |||
| JPH083577A | 1996-01-09 |
Other References:
R. BLOODWORTH, E. WENDT: "ER-fluids based on polyurethane dispersions: structure and properties", POLYMER PREPRINTS (AMERICAN CHEMICAL SOCIETY, DIVISION OF POLYMER CHEMISTRY); MEETING 208: AUGUST 21-25, 1994, WASHINGTON, DC, vol. 35, no. 2, 1994, US, pages 356 - 357, XP009533028
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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