Electric field responsive fluids

Details Electric field responsive fluids Electric field responsive fluids

1977-01-21

1978-12-12

Pitlick, Harris A.

Compositions

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

Organic components

252 73, 252 77, 252 79, C09K 300

Patent

active

041295137

ABSTRACT:
In a fluid composition which is capable of exhibiting a substantial increase in apparent viscosity under the influence of an electric field and which is of the type wherein solid particles of a chemical substance are dispersed in an electrically non-conducting oleaginous vehicle, superior performance results when the chemical substance is a polymer containing acid groups, the polymer having a density not exceeding 1.8 and a specified minimum water absorbency.

REFERENCES:
patent: 2417850 (1947-03-01), Winslow
patent: 3047507 (1962-07-01), Winslow
patent: 3385793 (1968-05-01), Klass et al.
patent: 3397147 (1968-08-01), Martinek
patent: 3427247 (1969-02-01), Peck
patent: 3970573 (1976-07-01), Westhaver
patent: 3984339 (1976-10-01), Takeo et al.
patent: 4033892 (1977-07-01), Stangroom

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