Coolant composition and methods of use thereof

Details Coolant composition and methods of use thereof Coolant composition and methods of use thereof

2007-08-21

2007-08-21

Green, Anthony J. (Department: 1755)

Compositions

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

Organic components

C252S070000, C252S071000, C252S074000, C252S075000

Reexamination Certificate

active

11641581

ABSTRACT:
The present invention provides a coolant composition having a glycol as a main component, which prevents iron and aluminum from being corroded, and in particular, has excellent corrosion preventing properties for aluminum and aluminum alloys at high temperatures, and the coolant composition is characterized by containing: (a) 0.1-10 % by weight of at least one component selected from among aromatic monobasic acids and the salts thereof; (b) 0.0001-0.1 % by weight of at least one component selected from among strontium compounds, magnesium compounds and calcium compounds; and (c) 0.01-1.0 % by weight of 2-phosphonobutane-1,2,4-tricarboxylic acid or the salt thereof.

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