Antifreeze coolant composition for high temperature...

Details Antifreeze coolant composition for high temperature... Antifreeze coolant composition for high temperature...

2008-06-17

2008-06-17

Ogden, Necholus (Department: 1796)

Compositions

Heat-exchange, low-freezing or pour point, or high boiling...

Organic components

C252S075000, C252S076000

Reexamination Certificate

active

07387748

ABSTRACT:
The present invention comprises an improved antifreeze coolant composition with certain additives that serve to increase the thermal stability of the glycol component of a glycol/water coolant composition and to reduce the tendency of the glycol component to degrade under elevated thermal conditions. These additives comprise organic compounds with a carboxylic acid moiety and a hydroxyl moiety, and also tricarballylic acid. Another aspect of this invention concerns a method for improving the stability of the glycol component of a glycol/water coolant composition in engine cooling/heating systems by formulating a glycol/water coolant composition with the thermal stability additive to form an improved coolant composition, and contacting the engine cooling/heating system with the improved coolant composition.

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