| 摘要 |
Compositions and methods have been discovered for inhibiting corrosion of metals, particularly iron alloys, in con- tact with fluids, either hydrocarbons, alcohols, or aqueous fluids, employin g mercaptoalcohols. The mercaptoalcohols should have at least one water solubilizing hydroxyl group. In particular, suitable mercaptoalcohols have the formula: (HS)n-R-(OH)m where R is a straight, branched, cyclic or heterocyclic alkylene, arylene, alkylarylene , arylalkylene, or hydrocarbon moiety having from 1 to 30 carbon atoms; n and m each independently averages from t to 3; and the heteroatom in the heterocyclic moiety substituent, if present, may be N, O, S and/or P. Preferred mercaptoalcohols include 2-mercaptoethano l, 2-mercaptopropanol, I-mercapto-2-propanol, and 2-mercaptobutanol, in part because they are soluble in many fluids. These corrosion inhibitors show improved inhibition of both generalized and localized corrosion, specifically in high shear and high flo w environments.
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