Biobased and biodegradable corrosion inhibition composition
AssigneeZestBio, Inc.
InventorsLuke Latimer, Ryan Protzko, Nicole Nelson
Life of this patent
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Abstract
A composition to mitigate metal corrosion that could be used within a fluidic system. The composition can include mixtures containing an organic compound with carboxylic functional group, which may include a hydroxydicarboxylic acid or salt thereof, an amino acid, or an amino acid polymer in combination with an aromatic compound and/or a buffer.
Claims44
A corrosion inhibitor composition comprising:
- 20-85% of at least one hydroxycarboxylic acid with two or three carboxylic functional groups and at least one hydroxyl functional group;
- and
- 15-80% of at least one heterocyclic aromatic compound, wherein the at least one heterocyclic aromatic compound comprises a heterocyclic aromatic compound that is represented by the formula:
- or the salts or tautomers thereof, wherein in the formula of the heterocyclic aromatic compound:
- X is selected from NRa, S, and O;
- R1-R4, each independently are selected from CRb and N;
- Ra is selected from:
- H, C1-C20-alkyl, C1-C20-hydroxyalkyl, C1-C20-alkyl ether, C1-C20-aminoalkyl, C1-C20-alkyl carboxylic acid, C1-C20-aminoalkyl carboxylic acid, C1-C20-alkyl carboxamide, C1-C20-alkenyl containing 1, 2, 3, 4, or 5 double bonds, alkyls partially substituted with carbocycles or heterocycles, and alkyls fully substituted with carbocycles or heterocycles;
- Rb is independently selected from:
- H, F, Cl, Br, OH, NH2, NO2, CN, CHO, C1-C20-alkyl, C1-C20-hydroxyalkyl, C1-C20-alkyl ether, C1-C20-aminoalkyl, C1-C20-alkyl carboxylic acid, C1-C20-aminoalkyl carboxylic acid, C1-C20-alkyl carboxamide, C1-C20-alkenyl which contains 1, 2, 3, 4, or 5 double bonds, alkyls partially substituted with carbocycles or heterocycles, alkyls fully substituted with carbocycles or heterocycles, and an option wherein at least one pair of R1, R2, R3, and R4 are taken together, with intervening atoms, to form a carbocycle, a heterocycle, a substituted carbocycle, or a substituted heterocycle.
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A corrosion inhibitor composition comprising:
- 20-85% of a hydroxycarboxylic acid with two or three carboxylic functional groups and at least one hydroxyl functional group;
- and
- 15-80% of an aromatic compound, wherein the aromatic compound is represented by a formula:
- or the salts or tautomers thereof, wherein in the formula of the aromatic compound:
- R1-R6 are each independently selected from CRc and N;
- and
- wherein Rc is independently selected from:
- H, F, Cl, Br, OH, NH2, NO2, CN, CHO, C1-C20-alkyl, C1-C20-hydroxyalkyl, C1-C20-alkyl ether, C1-C20-aminoalkyl, C1C20-alkyl carboxylic acid, C1-C20-aminoalkyl carboxylic acid, C1-C20-alkyl carboxamide, C1-C20-alkenyl which contains 1, 2, 3, 4, or 5 double bonds, alkyls partially substituted with carbocycles or heterocycles, alkyls fully substituted with carbocycles or heterocycles, and an option wherein R1 and R2 are taken together, with intervening atoms, to form a carbocycle, a heterocycle, a substituted carbocycle, or a substituted heterocycle.
A composition for corrosion inhibition in Galvanized Steel comprising:
- 20-80% of at least one hydroxydicarboxylic acid with two or three carboxylic functional groups and at least one hydroxyl functional group or salt thereof;
- and
- 20-80% of a borate compound.
A method for corrosion inhibition comprising:
- forming a corrosion inhibition composition, the corrosion inhibition composition comprising:
- 20-85% of an organic compound with two or three carboxylic functional groups and at least one hydroxyl functional group, and 15-80% of an aromatic compound;
- and
- applying the corrosion inhibition composition within a fluid system.
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Dependencies are inferred from the claim text.