Corrosion-inhibited antifreeze formulations having monocarboxyli

Details Corrosion-inhibited antifreeze formulations having monocarboxyli Corrosion-inhibited antifreeze formulations having monocarboxyli

1993-03-26

1994-11-22

Lieberman, Paul

Compositions

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

Organic components

252 75, 252 73, 252 74, 252 77, 252390, 252391, C09K 500

Patent

active

053666518

ABSTRACT:
Antifreeze concentrate is disclosed having water soluble liquid alcohol freezing point depressant and corrosion inhibitor comprising carboxylic acids or their salts and a triazole compound, wherein the concentrate contains: (1) C.sub.5 -C.sub.16 aliphatic monobasic acid or the alkali metal, ammonium or amine salt thereof; (2) hydrocarbyl triazole; and (3) imidazole.

REFERENCES:
patent: 4000079 (1976-12-01), Rasp et al.
patent: 4389371 (1983-06-01), Wilson et al.
patent: 4647392 (1987-03-01), Darden et al.
Fay, R. H., "Antifreezes and Deicing Fluids," Kirk-Othmer Encyclopedia of Chemical Technology (1978 ed.), vol. 3, pp. 79-95 no month available.
Hersch, P. et al., "An Experimental Survey of Rust Preventives In Water-II". The 1961, pp. 251-265 11 Jul. 1961.
G. Butler & A. D. Mercer, "Inhibitor Formulations for Engine Coolants," British Corrosion Journal, vol. 12, No. 3 (1977), pp. 171-174 (Sep. 1977).

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