Method and composition for the corrosion - inhibition of iron and steel in the case of high temperature.

摘要

A composition and method for inhibiting corrosion ofiron and steel in the presence of aqueous acid at hightemperatures, containing an alkenylphenone having thefollowing structure:(I) wherein R1 may be aryl of 6 to about 10 carbons, and R2 andR3 may be the same or different and each may be hydrogen,halogen, or aliphatic of about 3 to about 12 carbons, and R2may also be alkanol, ether, or aryl of 6 to about 10 carbons,provided that the total number of carbons in said alkenyl-phenone does not exceed 16, anda substituted 1-azanaphthalene of the structure:wherein R4 is alkyl of about 4 to about 16 carbons, oralkylaryl of about 7 to about 20 carbons, and X is chloro orbromo.