Method for applying halide brines to surfaces
AssigneeTetra Technologies, Inc.
InventorsSurendra K. Mishra, David J. Hanlon, Nam-Sook Bae
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Abstract
A method for applying halide brine to surfaces requiring protection against freeze conditions, inhibition of snow and ice accumulating, deicing or freeze retardation, for example, or dust control with limited corrosion is disclosed, the method comprising the steps of forming an admixture of polyhydroxy carboxylate and polyalkoxylated amine dispersed in an halide brine solution in an amount effective to inhibit corrosion; and applying the admixture to surfaces. The method of this invention can be used to limit corrosion in the application of a halide brine to surfaces of dust-producing materials as well as surfaces requiring protection against freeze conditions.
Claims26
A method for applying halide brine to a surface with limited corrosion comprising the steps of:
- (a) forming an admixture of polyhydroxy carboxylate and polyalkoxylated amine dispersed in an halide brine solution in an amount effective to inhibit corrosion;
- and
- (b) applying the admixture of step (a) to a surface in an amount effective for protection against freeze conditions or for dust control.
A corrosion inhibited calcium or magnesium chloride brine for use on road surfaces comprising from 10 to 20,000 mg/kg D-gluconic acid and from 1 to 15,000 mg/kg ethoxylated N-alkyl-1,3-diaminopropane.
In a method for controlling snow and ice on a surface with a halide brine, comprising the step of applying the brine to the surface, the improvement wherein the brine comprises polyhydroxy carboxylate and polyalkoxylated amine dispersed therein in an amount effective to inhibit corrosion.
A method for applying halide brine for corrosion-inhibited dust control comprising the steps of:
- (a) forming an admixture of polyhydroxy carboxylate and polyalkoxylated amine dispersed in an halide brine solution in an amount effective to inhibit corrosion;
- and
- (b) applying the admixture of step (a) to surfaces of dust-producing materials.
A method for applying a corrosion-limiting halide brine for deicing, melting of snow and freeze retardation of materials exposed to freeze conditions, the method comprising the steps of:
- (a) forming an admixture of polyhydroxy carboxylate and polyalkoxylated amine dispersed in a halide brine solution in an amount effective to inhibit corrosion of metals;
- and
- (b) applying the admixture of step (a) to surfaces of materials exposed to freeze conditions to inhibit freezing.
Dependencies are inferred from the claim text.