Optically indicating surface de-icing fluids

Details Optically indicating surface de-icing fluids Optically indicating surface de-icing fluids

1989-03-17

1991-08-13

Lieberman, Paul

Compositions

Frost-preventing, ice-thawing, thermostatic, thermophoric,...

106 13, C09K 318

Patent

active

050394398

ABSTRACT:
An optically indicating de-icing solution for surfaces comprising a freezing point depressant liquid and a compound which exhibits a visually observable change as solid phase domains become present in the solution is disclosed. When applied to a surface, particularly the surface(s) of aircraft, the formation of solid phase ice domains in the liquid provides a distinct and visible change in the appearance of the solution. This allows a determination of ice formation upon the aircraft as well as a determination of the effectiveness of the de-icing solution.

REFERENCES:
patent: 3928654 (1975-12-01), Bonnanzio
patent: 4249412 (1981-02-01), Townsend
patent: 4426409 (1984-01-01), Roe
patent: 4744913 (1988-05-01), Salvador
patent: 4824588 (1989-04-01), Lin

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