Corrosion inhibitors
AssigneeRhodia Operations
InventorsAlan Fellows, Kevan Hatchman, Chris Jones
Life of this patent
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Abstract
The present invention provides the use of a sulfosuccinate as a corrosion inhibitor. In particular, the sulfosuccinate may be used to inhibit the corrosion of a metal component that is, or will be, in contact with an aqueous fluid, in order to prevent or reduce corrosion of the metal component. The sulfosuccinate may be used to inhibit corrosion of a metal component in an industrial aqueous system, such as a hydrocarbon plant; a chemical plant; a water plant; or a paper manufacturing plant, and in particular in an oilfield system or a downstream oil-related system.
Claims24
A method of preventing or reducing corrosion of a metal component that is in contact with, or will be in contact with, an aqueous fluid, wherein the method comprises:
- applying a sulfosuccinate to a metal component or adding the sulfosuccinate to an aqueous fluid that is in contact with, or will be in contact with, the metal component
- wherein the sulfosuccinate is a reaction product of maleic anhydride and a compound selected from the group consisting of:
- a fatty alkanolamide, a fatty alkoxylated alkanolamide, a fatty alcohol, a fatty alkoxylated alcohol, an alkoxylated terpene group, and an alkyl polyglucoside, followed by reaction with a bisulfite;
- wherein the fatty group of the compound is a C8-30 unbranched alkyl or alkenyl group.
A method of inhibiting corrosion of a metal component of an industrial aqueous system that is in contact with, or will be in contact with, an aqueous fluid, wherein the metal component contacts the aqueous fluid within the industrial aqueous system, the method comprises:
- applying a sulfosuccinate to a metal component of an industrial aqueous system or adding the sulfosuccinate to an aqueous fluid that is in contact with, or will be in contact with, the metal component of the industrial aqueous system,
- wherein the sulfosuccinate is a reaction product of maleic anhydride and a compound selected from the group consisting of:
- a fatty alkanolamide, a fatty alkoxylated alkanolamide, a fatty alcohol, a fatty alkoxylated alcohol, an alkoxylated terpene group, and an alkyl polyglucoside, followed by reaction with a bisulfite;
- wherein the fatty group of the compound is a C8-30 unbranched alkyl or alkenyl group.
Dependencies are inferred from the claim text.