Low dosage chemical suppression agents for carbon steels degradation
AssigneeBaker Hughes Incorporated
InventorsZHENGWEI LIU, TRACEY S. JACKSON, JACOB GIBSON
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Abstract
A composition for inhibiting corrosion of a metal is provided. The corrosion inhibitor composition comprises 5-amino-2-mercaptobenzimidazole. The corrosion inhibitor composition can also comprise a 2-mercaptobenzimidazole derivative selected from the group consisting of 2-mercapto-5-methylbenzimidazole, 5-Ethoxy-2-mercaptobenzimidazole, 5-(difluoromethoxy)-2-mercapto-1H-benzimidazole 1-Methyl-1H-benzimidazole-2-thiol and 2-mercapto-5-nitrobenzimidazole. The corrosion inhibitor composition outperforms many other sulfur-containing corrosion inhibitors in kettle testing.
Claims14
A method of inhibiting corrosion of a metal, the method comprising contacting the metal with a corrosion inhibitor composition comprising an effective amount of a 2-mercaptobenzimidazole derivative selected from the group consisting of 2-mercapto-5-methylbenzimidazole, 2-mercapto-5-nitrobenzimidazole, 5-Ethoxy-2-mercaptobenzimidazole, 5-(difluoromethoxy)-2-mercapto-1H-benzimidazole, and 1-Methyl-1H-benzimidazole-2-thiol.
A method of inhibiting corrosion of a metal, the method comprising contacting the metal with an effective amount of a corrosion inhibitor composition comprising a 2-mercaptobenzimidazole derivative selected from the group consisting of 2-mercapto-5-methylbenzimidazole, 2-mercapto-5-nitrobenzimidazole, 5-Ethoxy-2-mercaptobenzimidazole, 5-(difluoromethoxy)-2-mercapto-1H-benzimidazole, and 1-Methyl-1H-benzimidazole-2-thiol.
A composition for inhibiting corrosion of a metal in an environment in which the metal would otherwise be corrodible, the composition comprising a 2-mercaptobenzimidazole derivative selected from the group consisting of 2-mercapto-5-methylbenzimidazole, 2-mercapto-5-nitrobenzimidazole, 5-Ethoxy-2-mercaptobenzimidazole, 5-(difluoromethoxy)-2-mercapto-1H-benzimidazole, and 1-Methyl-1H-benzimidazole-2-thiol.
Dependencies are inferred from the claim text.