Galvanized metal corrosion inhibitor compositions and methods of use

A method of preventing formation of rust on a metal surface, comprising:

• applying a compound of formula (I) onto the metal surface,
• and
• applying a polyamine onto the metal surface, wherein the polyamine comprises poly[oxy(methyl)-1,2-ethandilyl], alpha-(2-aminomethylethyl)-omega-(2-aminomethyl-ethoxy)-) functionalized with 1,2-propanediol, 3-chloro,
• wherein X is independently hydrogen, halogen, or a substituted or unsubstituted C1-5 alkyl group;
• m is 1, 2, 3, or 4;
• R1 is hydrogen, a substituted or unsubstituted C1-C12 alkyl group, or a substituted or unsubstituted C4-C6 aryl group;
• R2 is absent, hydrogen, a substituted or unsubstituted C1-C12 alkyl group, or a substituted or unsubstituted C4-C6 aryl group;
• R3 is a bond or CHR4;
• R4 is hydrogen, halogen, NR5R6, or OR5;
• wherein R5 and R6 are each independently hydrogen, a substituted or unsubstituted C1-C12 alkyl group, or a substituted or unsubstituted C4-C6 aryl group;
• and
• Z is independently nitrogen, CX, or N+R5.