Patent ID: 7641813
Filing Date: 2010-01-05
Classification: C09K,C23F

Abstract:
1. An antifreeze composition comprising a) a water soluble liquid alcohol freezing point depressant, b) a triazine based compound of formula I, c) a mixture of tolutriazole compounds of formulae II and III, d) 2-ethylhexanoic acid or an alkali metal salt thereof, e) heptanoic acid or an alkali metal salt thereof and f) water, where the compounds of formula I are where Z is a C X is hydrogen or an alkali metal, R R R where the compounds of formulae II and III are where 2-ethylhexanoic acid or its alkali salt together with heptanoic acid or its alkali salt are present from about 20% to about 60% by weight, based on the weight of the composition.