Liquid coolant compositions with anti-corrosive property contain

Details Liquid coolant compositions with anti-corrosive property contain Liquid coolant compositions with anti-corrosive property contain

1995-11-13

1998-02-17

Skane, Christine

Compositions

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

Organic components

252 75, 252 76, C09K 500

Patent

active

057188360

ABSTRACT:
A liquid coolant composition with improved anti-corrosive property contains 85-99 weight % of an agent for lowering the melting point selected from the group consisting of alcohols and glycol, and 1-15 weight % of a rust preventive composition. The rust preventive composition contains 0.00005-0.02 weight % at elemental metal concentration of calcium compounds or a mixture of 0.00005-0.02 weight % each of calcium and magnesium compounds, and at least one kind of rust preventive selected from the group consisting of phosphates, borates, nitrates, molybdates, benzoates, silicates, triazoles, thiazoles, sebacic acid and octylic acid. Still better results are obtained if 0.001-0.02 weight % of at least one kind of polyphosphoric or polycarboxylic acids is additionally contained.

REFERENCES:
patent: 3228884 (1966-01-01), Daignault et al.
patent: 3264218 (1966-08-01), Daignault et al.
patent: 4452715 (1984-06-01), Hirozawa
patent: 4717495 (1988-01-01), Hercamp et al.
patent: 5100571 (1992-03-01), Hartman

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