ANTIFREEZE CORROSION INHIBITOR Russian patent published in 2004 - IPC

FIELD: special-destination fluids.

SUBSTANCE: corrosion inhibitor for antifreezes, applicable both for internal combustion engines and for heat carriers in heat-exchange apparatuses, contains, wt %: disodium phosphate dodecahydrate 5.0-5.5, sodium tetraborate decahydrate 6.5-7.5, sodium carbonate 0.50-0.70, Na EDTA 0.25-0.35, 2-mercaptobenzothiazole alkali metal salt 0.10-0.15, water 10.0-13.0, product of reaction of o-phenylenediamine with sodium nitrite and benzoic acid in ethylene glycol 2.5-5.0, and ethylene glycol - the balance.

EFFECT: improved protective properties regarding all structural materials of engine without loss in resistance against sunlight effect.

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