Title:
THERMAL RESPONSIVE MATERIAL, AND THERMAL CONTROL DEVICE AND FIBER USING THERMAL RESPONSIVE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2017/110240
Kind Code:
A1
Abstract:
The present invention has focused on change in elastic modulus or breaking stress when a liquid crystalline polymer transits from a liquid crystal phase to an isotropic phase due to temperature change, and provides a thermal responsive material having strength (durability) not below a certain level and an excellent responsiveness. The thermal responsive material contains, as a matrix, a liquid crystalline polymer that reversibly changes between the liquid crystal phase and the isotropic phase according to the temperature change, wherein, when the elastic modulus of the matrix when containing the liquid crystal phase is represented as E1 and the elastic modulus of the matrix when containing the isotropic phase is represented as E2, E1/E2≤1000 is satisfied, and when the breaking stress of the matrix when containing the liquid crystal phase is represented as σ1 and the breaking stress of the matrix when containing the isotropic phase is represented as σ2, σ1 /σ2≤40 is satisfied.
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Inventors:
ISEKI SEIJI (JP)
HIDAKA YUKI (JP)
HIDAKA YUKI (JP)
Application Number:
PCT/JP2016/081846
Publication Date:
June 29, 2017
Filing Date:
October 27, 2016
Export Citation:
Assignee:
TOYO TIRE & RUBBER CO (JP)
International Classes:
C08G18/32; C08L101/00; D01F6/70
Foreign References:
| JP2015218250A | 2015-12-07 | |||
| JP2010017066A | 2010-01-21 | |||
| JP2016056113A | 2016-04-21 |
Other References:
DONG-JIN LEE ET AL.: "Synthesis of Enantiotropic Liquid Crystal Copolyurethanes Containing Para- and Meta-Type Diisocyanate Units in the Backbone", MACROMOLECULES, vol. 31, no. 21, 26 September 1998 (1998-09-26), pages 7142 - 7148, XP000779755
See also references of EP 3395846A4
See also references of EP 3395846A4
Attorney, Agent or Firm:
OKINAKA Jin (JP)
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