Alkaline earth or alkali metal salts for antifreeze, deicing, and freeze control
AssigneeChemical Specialties, Inc.
InventorStephen E. Novak
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Abstract
Antifreeze, deicing, and freeze control systems comprising aqueous alkaline earth or alkali metal salts of calcium, sodium and magnesium nitrate used separately or in mixtures with other substances currently used for these applications such as sodium chloride, magnesium chloride, calcium chloride, diethylene glycol, and acetates of magnesium, potassium and sodium, are presented.
Claims30
An aggregate treated with antifreeze comprising a salt that is at least one of calcium nitrate, sodium nitrate, or magnesium nitrate.
A method of removing ice from a surface comprising:
- (i) finding a surface having at least a partial coating of ice or snow;
- and
- (ii) contacting said at least partial coating with a composition comprising at least one of calcium nitrate, sodium nitrate, or magnesium nitrate.
A method of preventing ice formation on a surface comprising contacting said surface with antifreeze, wherein said antifreeze comprises at least one of calcium nitrate, sodium nitrate, or magnesium nitrate.
A method of preventing freezing of aggregates comprising contacting said aggregates with an antifreeze, wherein said antifreeze comprises at least one of calcium nitrate, sodium nitrate, or magnesium nitrate.
A method of preventing freezing of coal comprising applying magnesium nitrate to the surface of said coal.
Dependencies are inferred from the claim text.