CORROSION INHIBITOR FOR ANTIFREEZES Russian patent published in 1999 - IPC

FIELD: chemical technology; applicable in systems of cooling of internal combustion engines and as heat carrier in heat-exchange apparatuses. SUBSTANCE: corrosion inhibitor contains, wt. %: decahydarate disodium phosphate, 5.5- 6.5; alkali metal salt of 2-mercaptobenzothiazole, 0.25-0.40; tilon B, 0.20- 0.25; decahydrate sodium tetraborate, 6.0-8.0; water, 14.5-15.5; ethylene glycol, the balance. EFFECT: higher protective properties with regard to all engine structural materials with preservation of stability t hard water and ecologically safe in application. 3 tbl, 15 ex