ANTIFREEZE CONCENTRATE Russian patent published in 2005 - IPC

FIELD: chemical technology, antifreezes.

SUBSTANCE: invention relates to antifreeze concentrates used in cooling system of internal combustion motors and as heat-carriers in heat-exchange devices. Antifreeze concentrate comprises the following components, wt.-%: mixture of alkaline metal salts of adipic or succinic, or sebacic, or benzoic, or 2-ethylhexanoic acids taken in any combination, 0.005-60.0; sodium molybdate, 0.01-10.0 benzotriazole or tolyltriazole, or their mixture taken in equal ratios, 0.001-5.0; alkaline metal salt of 2-mercaptobenzthiazole (Captax), 0.005-1.2; caprolactam, 0.001-1.5; sodium polyacrylate, 0.001-3.0; water, 5.0-15.0; ethylene glycol or propylene glycol, or polyglycols, the balance. Invention provides improving exploitation properties of antifreeze and its stability in storage at high temperatures.

EFFECT: improved and valuable properties of antifreeze.

2 cl, 4 tbl, 34 ex