Monobasic-dibasic acid/salt antifreeze corrosion inhibitor

C - Chemistry – Metallurgy – 09 – K

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C09K 5/00 (2006.01) C09K 5/20 (2006.01) C23F 11/08 (2006.01) C23F 11/10 (2006.01)

Patent

CA 1258162

MONOBASIC-DIBASIC ACID/SALT ANTIFREEZE CORROSION INHIBITOR ABSTRACT OF THE INVENTION A corrosion inhibitor for use in water and liquid alcohol antifreeze/coolant compositions comprising the combination of a C5-C16 aliphatic monobasic acid or the alkali metal, ammonium, or amine salt of said acid, a C5-C16 hydrocarbyl dibasic acid or the alkali metal, ammonium, or amine salt of said acid, and a hydrocarbyl triazole gives synergistic corrosion protection to metal surfaces as compared with formulations containing either the monoacid or diacid component alone, or formulations containing other conventional corrosion inhibitors.

509579

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