Corrosion-inhibited antifreeze/coolant composition

Details Corrosion-inhibited antifreeze/coolant composition Corrosion-inhibited antifreeze/coolant composition

C - Chemistry, Metallurgy

23

F

C23F 11/12 (2006.01) C09K 5/00 (2006.01) C09K 5/20 (2006.01) F28F 23/02 (2006.01)

Patent

CA 2051079

A corrosion-inhibited antifreeze composition is disclosed. Specifically, the antifreeze composition comprises a major portion of a liquid alcohol freezing point depressant and a minor portion of at least one hydroxyl-substituted aromatic carboxylic acid having the hydroxyl radical disposed proximate to the carboxylic radical. The above described acid is employed as a corrosion inhibitor. Other conventional corrosion inhibitors may be employed in conjunction with the acids. In another embodiment, the present invention relates to a process for inhibiting the corrosion of metals present in the cooling system of an internal combustion engine which comprises intimately contacting the metal surface to be inhibited against corrosion with the antifreeze composition described above. Most preferably, the target substrate is high lead solder.

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