SYNERGISTIC COMBINATIONS OF CARBOXYLATES FOR USE AS FREEZINGPOINT DEPRESSANTS AND CORROSION INHIBITORS IN HEAT TRANSFER FLUIDS

摘要

Aqueous coolants and heat transfer fluids are disclosed. The compositions comprise aqueous solutions of a mixture of a C1-C2 carboxylate salt with a C3-C5 carboxylate salt. A C6-C12 acid may also be added to the mixture. The aqueous compositions may further comprise a hydrocarbyl triazole and thiazole. The aqueous compositions have good heat transfer properties, low freezing points and low corrosion properties.