Nitrite- and phosphate-free glycol-based coolant mixtures

Details Nitrite- and phosphate-free glycol-based coolant mixtures Nitrite- and phosphate-free glycol-based coolant mixtures

1988-02-26

1989-03-07

Wax, Robert A.

Compositions

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

Organic components

252 76, 252 783, 252 785, 2523893, 2523894, 252396, C09K 500

Patent

active

048104043

ABSTRACT:
Glycol-based coolant mixtures which are free of nitrites and phosphates contain alkali metal salts of bis(carboxyalkyloxyphenyl)-2,2-propane and stabilized silicate and also further corrosion-inhibiting additives.

REFERENCES:
patent: 3780127 (1973-12-01), Young et al.
patent: 3816550 (1974-06-01), Young et al.
patent: 3912774 (1975-10-01), Kotzsch et al.
patent: 4242214 (1980-12-01), Lambert, Jr.
patent: 4370255 (1983-01-01), Plueddemann
patent: 4452715 (1984-06-01), Hirozawa
patent: 4629602 (1986-12-01), Gousetis et al.
patent: 4676919 (1987-06-01), Zientek
J. Org. Chem. 25, 1191 (1960).
Organosilicon Perivatives of Phosphorus and Sulfur by S. N. Borisov, M. G. Voronkov and E. Ya. Lukavits, Plenum Press, N.Y.-London 1971, p. 94.

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