| 摘要 |
FIELD: chemical engineering. SUBSTANCE: low freezing cooling agents designed for cooling systems of internal combustion engines and also usable as working fluids in heat exchangers operated at low and moderate temperatures are composed of (in wt %): ethyl carbitol 10.0-45.0; ethylene glycol, 15.0-64.0; sodium tetraborate, 0.3-1.8; alkali metal phosphate, 0.2- 1.2; 2-mercaptothiazol alkali metal salt, 0.005-0.02; alkali metal silicate, 0.005-0.5; alkali metal hydroxide, 0.08-0.25; organosilicon foam suppressor, 0.0005-0.015; dyestuff, 0.001-0.002; and water, the balance. EFFECT: improved performance characteristics. 4 tbls |
