| abstract |
(57) [Summary] Antifreeze / coolant composition [Problem] Metals for cooling system, especially iron, aluminum, solder, Provided is an antifreeze / coolant composition that has excellent corrosion prevention performance on copper and can significantly reduce the production time. In an antifreeze / coolant composition based on water or glycols, a branched aliphatic dicarboxylic acid having 8 or 9 carbon atoms and an alkali metal salt, an ammonium salt, an amine salt (hereinafter referred to as a branched salt) thereof. (Hereinafter referred to as a type aliphatic dicarboxylate). |