ANTIFREEZE Russian patent published in 2003 - IPC

FIELD: special-destination fluids. SUBSTANCE: antifreeze applicable for cooling internal combustion engines and as heat carrier in heat-exchange apparatuses contains, wt %: 74% orthophosphoric acid 0.3- 1.5, alkali metal hydroxide 0.03-1.7 or hydroxyethylamine 3.0-3.5, 2- mercaptobenzothiazole sodium salt 0.008- 0.020, sodium carbonate 0.10-0.15, ethylenediaminetetraacetic acid disodium salt 0.02-0.05, oxyethylidenediphosphonic acid 0.01-0.03, caprolactam 0.01-0.02, polyvinyl alcohol/sodium oleate mixture (from 1: 1 to 1:4) 0.15-0.30, foam suppressor 0.002-0.003, dye 0.002-0.003, water 2.0-2.5, and ethylene glycol or propylene glycol - the balance. EFFECT: enhanced anticorrosive and lubricating properties. 4 tbl