Title:
MAGNETIC VISCOELASTIC ELASTOMER COMPOSITION AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2024/014100
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a magnetic viscoelastic elastomer composition in which a change in the storage elastic modulus when a magnetic field is applied is greater than a change in the storage elastic modulus when a magnetic field is not applied. This magnetic viscoelastic elastomer composition contains a resin (A) and a magnetic powder (B). The resin (A) includes a urethane resin (A1). The urethane resin (A1) includes a product of a reaction between a polyol (x) and a polyisocyanate (y). The polyol (x) includes a triol (x1) having a number average molecular weight of 4000 or more.
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Inventors:
HYOUI KANO (JP)
Application Number:
PCT/JP2023/017760
Publication Date:
January 18, 2024
Filing Date:
May 11, 2023
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
C08L75/04; C08G18/08; C08K3/01; C08K5/10
Domestic Patent References:
| WO2014112216A1 | 2014-07-24 |
Foreign References:
| JPH04198292A | 1992-07-17 | |||
| JP2019210311A | 2019-12-12 |
Other References:
KIMURA YUKIO, KANAUCHI SHUNTA, KAWAI MIKA, MITSUMATA TETSU, TAMESUE SHINGO, YAMAUCHI TAKESHI: "Effect of Plasticizer on the Magnetoelastic Behavior for Magnetic Polyurethane Elastomers", CHEMISTRY LETTERS, CHEMICAL SOCIETY OF JAPAN,NIPPON KAGAKUKAI, JP, vol. 44, no. 2, 5 February 2015 (2015-02-05), JP , pages 177 - 178, XP093128464, ISSN: 0366-7022, DOI: 10.1246/cl.140932
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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