Process and composition for inhibiting iron and steel corrosion

Details Process and composition for inhibiting iron and steel corrosion Process and composition for inhibiting iron and steel corrosion

C - Chemistry, Metallurgy

23

F

31/13

C23F 11/04 (2006.01)

Patent

CA 1269521

Process and Composition for Inhibiting Iron and Steel Corrosion ABSTRACT OF THE DISCLOSURE A composition and method for inhibiting corrosion of iron and steel in the presence of aqueous acid, especially concentrated hydrochloric acid comprising at least 5% by weight HCl, comprising an effective corrosion inhibiting amount of an alkenylphenone having the following structure: (I) Image wherein R1 may be unsubstituted or inertly substituted aryl of 6 to about 10 carbons, and R2 and R3 may be the same or different and each may be hydrogen, halogen, or inertly substituted aliphatic of about 3 to about 12 carbons, and R2 may also be alkanol, ether, or unsubstituted or inertly substituted aryl of 6 to about 10 carbons, provided that the total number of carbons in said alkenylphenone does not exceed 16, and preferably including a surfactant, and a process of using this composition.

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