Electro rheological fluid comprising lyotropic liquid crystallin

Details Electro rheological fluid comprising lyotropic liquid crystallin Electro rheological fluid comprising lyotropic liquid crystallin

1995-03-01

1996-07-16

Skane, Christine

Compositions

Heat-exchange, low-freezing or pour point, or high boiling...

Organic components

252 73, 252 79, C10M17100

Patent

active

055364284

ABSTRACT:
A homogeneous electro rheological fluid is provided. The fluid comprises a lyotropic liquid crystalline polymer dissolved in a solvent in low concentrations in a manner in which the fluid does not exhibit a liquid crystalline state. According to the homogeneous electro rheological fluid of the present invention, the problem associated with the precipitation of particles can be circumvented. Moreover, the electro rheological fluid can provide a large difference in torque before and after the application of an electric field; therefore, exhibits good electro theological properties. The electro rheological fluid according to the present invention can be used in making engine mounts, damping apparatuses, clutches, torque converters, braking systems, valves, dampers, suspensions, actuators, vibrators, ink jet printers, and the like.

REFERENCES:
patent: 5354489 (1994-10-01), Inoue et al.
Database WPI, Section Ch, Week 9314, Derwent Publications Ltd., London, Great Britain, Class A85, AN 93-111695 & JP-A-04 348 194 (Asahi Chem Ind. Co. Ltd.), Dec. 3, 1992.
Mori, "Liquid Crystalline Structures of poly-alpha-amino acids", Chem Abs 109: 15221, 1988.
Matsuo et al, "Electrorheological Properties of Polymeric Liquid Crystals", 16th Liquid Crystal Forum, Hiroshima University, Oct. 1990.

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