Corrosion inhibitor compositions including quaternized compounds having a substituted diethylamino moiety

A method of using a corrosion inhibitor composition for reducing the corrosion rate of a metal by a fluid having at least one corrosion agent, said method comprising:

• (a) introducing said corrosion inhibitor composition into said fluid, said inhibitor composition having at least one compound wherein said at least one compound wherein said at least one compound is a quaternized substituted diethylamino compound having the formula:
• wherein,
• R1 is a moiety selected from the group consisting of:
• (i) substituted and unsubstituted, saturated and unsaturated alkyl groups having from about 5 to about 29 carbon atoms;
• (ii) substituted and unsubstituted, saturated and unsaturated alkyl groups having from about 5 to about 29 carbon atoms, wherein said alkyl group at least contains one or more atoms selected from the group consisting of oxygen, sulfur and phosphorous;
• and
• (iii) combinations thereof;
• each R3 is independently a moiety selected from the group consisting of —CO2H, —SO3H, —PO3H2, —CO2R7, —CONH2, —CONHR7 and —CON(R7)2 groups and combinations thereof;
• each R7 is independently selected from the group consisting of hydrogen and linear and branched alkyl, aryl, alkylaryl, cycloalkyl and heteroaromatic groups having from 1 to about 10 carbon atoms, and combinations thereof;
• R8 is hydrogen or a linear alkyl group having from 1 to 10 carbon atoms;
• and
• n=0 to about 8, p=1 to about 5 and q=2 to about 10;
• and
• (b) contacting said metal with the fluid of step (a).