Compositions – Frost-preventing – ice-thawing – thermostatic – thermophoric,...
Patent
1981-05-18
1982-11-30
Albrecht, Dennis L.
Compositions
Frost-preventing, ice-thawing, thermostatic, thermophoric,...
23302R, 23302T, 126263, 423265, 423266, 423275, 423514, C09K 506, F24J 304
Patent
active
043614914
ABSTRACT:
This invention relates to a method of producing articles which generate heat at a substantially constant temperature for an extended period of time and which are able to remain in a stable state until such time as the generation of heat is desired. The method also relates to supercooled fluids produced by such methods. The method involves the processing of supercooled fluids such as hypo to produce this stable state. As a first step, a suitable material such as ethylene glycol may be added to the supercooled fluid to stabilize the supercooled fluid and to decrease the generation of heat in the supercooled fluid to obtain a desired temperature. The mixture is then heated to a relatively high temperature considerably above the melting temperature of the supercooled fluid. With the mixture at the high temperature, water is added to provide a particular specific gravity and an alkali is added to provide a particular pH.
The mixture may then be poured into rupturable pouches while being maintained at the high temperature. The mixture in the pouches is then allowed to cool slowly to ambient temperatures and is placed in a separate container with a triggering material.
REFERENCES:
patent: 1384747 (1921-07-01), Eckelmann
patent: 1385074 (1921-07-01), Ferguson
patent: 1570047 (1926-01-01), Darrin
patent: 2220777 (1940-11-01), Othner
patent: 2289425 (1942-07-01), Hogan
patent: 2827438 (1958-03-01), Broadley
patent: 3093308 (1963-06-01), Snelling
patent: 3951127 (1976-04-01), Watson et al.
patent: 4077390 (1978-03-01), Stanley
patent: 4091883 (1978-05-01), Schroder
Albrecht Dennis L.
Kay Laboratories, Inc.
Roston Ellsworth R.
Schwartz Charles H.
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