Polymeric materials to self-regulate the level of polar activato

Details Polymeric materials to self-regulate the level of polar activato Polymeric materials to self-regulate the level of polar activato

1998-05-27

2000-05-23

Oberleitner, Robert J.

Brakes

Internal-resistance motion retarder

Magnetic fluid or material

252572, 252 73, 252 77, 252 75, F16F 1503, H01B 320, C09K 500

Patent

active

060655720

ABSTRACT:
Electrorheological systems of improved temperature range are obtained by including within the system a solid polymer insoluble in a low molecular weight activating material and in the hydrophobic medium of the fluid. The polymer contains hydrophilic functionality, and in the polymer a portion of the low molecular weight polar activating material is sorbed in an amount which reversibly increases with increasing temperature.

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