SPECIFIC 3-ALKYLAMINO-2-HYDROXYSUCCINIC ACIDS AND THEIR SALTS AS CORROSION INHIBITORS FOR FERROUS METALS

摘要

Corrosion inhibitors and methods for inhibiting or reducing corrosion of metallic surfaces are provided. A corrosion inhibitor composition may include a 3-alkylamino-2-hydroxysuccinic acid compound. A method of inhibiting corrosion of a metallic surface in an aqueous system includes the step of contacting the surface with an effective amount of a corrosion inhibitor composition. The corrosion inhibitor composition may include other components, such as zinc, and it may also exclude phosphorus.

主权项

1. A corrosion inhibitor composition comprising zinc and one or more members selected from the group consisting of 2-n-butylamino-3-hydroxysuccinic acid, 2-dimethylamino-3-hydroxysuccinic acid, 2-diethylamino-3-hydroxysuccinic acid, 2-isoamylamino-3-hydroxysuccinic acid, 2-ethylenediamino-3-hydroxysuccinic acid, 2-(2-methoxyethyl)amino-3-hydroxysuccinic acid, 2-(3-methoxypropyl)amino-3-hydroxysuccinic acid, 2-sec-butylamino-3-hydroxysuccinic acid, 2-dimethylamino-N-oxide-3-hydroxysuccinic acid, any salt thereof, and any combination thereof.