CORROSION INHIBITING, FREEZING POINT LOWERING COMPOSITIONS
The present invention relates to corrosion inhibiting, freeze point lowering compositions comprising a mixture of a freeze point lowering agent and a corrosion inhibiting compound. The corrosion inhibiting, freeze point lowering compositions can be used in deicing brines or deicing solutions.
1 . A corrosion inhibiting composition stable to cold storage temperatures below about 15° F., the composition comprising: a mixture of water, a freeze point lowering agent and a corrosion inhibiting compound, wherein the freeze point lowering agent is potassium chloride, ammonium chloride, lithium chloride, potassium acetate, ammonium acetate, lithium acetate, potassium nitrate, ammonium nitrate, lithium nitrate or mixtures thereof and the corrosion inhibiting compound is sodium gluconate, wherein said composition is stable to cold storage temperatures at or below about 15° F.
2 . The corrosion inhibiting, freeze point lowering composition of claim 1 , wherein the composition comprises about 25% by weight to about 40% by weight of the corrosion inhibiting compound.
3 . The corrosion inhibiting, freeze point lowering composition of claim 1 , wherein the composition comprises about 1% by weight to about 50% by weight of a freeze point lowering agent.
4 . A liquid composition comprising an aqueous solution of a freeze point depressant and the corrosion inhibiting freeze point lowering composition of claim 1 .
5 . The liquid composition of claim 4 , wherein the aqueous solution is water.
6 . The liquid composition of claim 4 , wherein the freeze point depressant is selected from the group consisting of sodium chloride, magnesium chloride, calcium chloride, potassium chloride, calcium magnesium acetate, potassium acetate, urea, and ammonium sulfate.
7 . The liquid composition of claim 6 , wherein the composition comprises about 15% by weight to about 35% by weight of a freeze point depressant.