Heat transfer fluids containing dicarboxylic acid mixtures as corrosion inhibitors.

摘要

This invention relates to a coolant composition for use in automotive engines which composition comprises a liquid alcohol freezing depressant and a corrosion inhibitor consisting essentially of decanedioic acid, dodecanedioic acid and sodium tolyltriazole. This coolant composition is environmentally acceptable, uses readily available and relatively inexpensive materials and is more effective in protecting aluminum engine parts than traditional corrosion inhibitors.