Electroviscous fluid comprising a base neutralized carboxyaryl g

Details Electroviscous fluid comprising a base neutralized carboxyaryl g Electroviscous fluid comprising a base neutralized carboxyaryl g

1992-11-12

1994-05-03

Skane, Christine

Compositions

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

Organic components

252 79, 252572, C10M17100, C10M16904

Patent

active

053085256

ABSTRACT:
This invention pertains to electroviscous fluids comprising a dispersion in an electrical insulating fluid of microparticles that are comprised of a polyelectrolyte or a mixture of a polyether and a polyelectrolyte wherein said polyelectrolyte consists of a carboxyaryl group-containing organopolysiloxane that has been neutralized by a base containing a monovalent or divalent metal. The electroviscous fluids of this invention provide a high electroviscous effect and good dispersion stability, and they are thermally stable and do not abrade surrounding equipment.

REFERENCES:
patent: 3047507 (1962-01-01), Winslow
patent: 4129513 (1978-12-01), Stangroom
patent: 5210251 (1993-05-01), Ohashi et al.
Abstract EP 432601; Bayer AG; Hermann et al., Jun. 19, 1991.

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