Compositions – Heat-exchange – low-freezing or pour point – or high boiling... – Organic components
Patent
1985-11-27
1987-05-12
Wax, Robert A.
Compositions
Heat-exchange, low-freezing or pour point, or high boiling...
Organic components
252 783, C09K 500
Patent
active
046648330
ABSTRACT:
A corrosion-inhibited heat transfer composition concentrate comprising an alcohol, an organosiloxane/silicate copolymer, and a corrosion inhibiting amount of a nitrate salt. Such coolant concentrate may suitably be diluted with from about 25% to about 90% by weight of water based upon the weight of the concentrate, to form an aqueous composition which has particular utility as a corrosion-inhibited heat transfer composition for heat exchange systems, for example, those employed with internal combustion engines. Such compositions are highly effective in reducing corrosion in heat exchange systems containing components of aluminum construction.
REFERENCES:
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patent: 3337496 (1967-08-01), Pines et al.
patent: 4241014 (1980-12-01), Hirozawa et al.
patent: 4287077 (1981-09-01), Wing
patent: 4455248 (1984-06-01), Wood
Herbert H. Uhlig, Corrosion and Corrosion Control, Second Edition, pp. 14 & 39.
Hyde et al., "The Reaction Between Aluminum Metal and Aqueous Solutions of the Nitrite Ion", Corros. Australas., 6(2), 1981.
Wiggle et al., "The Effectiveness of Engine Coolant Inhibitors for Aluminum", Corrosion/80, paper No. 69.
Cassin Thomas R.
Jex Victor B.
Matulewicz William N.
McKenzie Dale A.
Mohr Paul H.
Union Carbide Corporation
Wamer Gary L.
Wax Robert A.
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