ANTI-FREEZE CONCENTRATE HAVING CORROSION PROTECTION AND AQUEOUS COOLANT COMPOSITION PRODUCED THEREFROM

摘要

The present invention relates to a corrosion-resistant antifreeze concentrate suitable for coolants and heat-carrying liquids, wherein the concentrate is a freezing point depressant liquid and a sulfur-containing organic compound, an inorganic salt molybdate, an inorganic phosphate salt, and an aliphatic, cycloaliphatic and aromatic monocarbon. Acids, dicarboxylic acids or tricarboxylic acids. An aqueous coolant composition suitable for cooling an internal combustion engine can be obtained therefrom, wherein the engine's cooling device has been made from aluminum using a soldering method comprising a fluoroaluminate soldering flux.