Nitrite- and phosphate-free antifreeze based on glycol

Details Nitrite- and phosphate-free antifreeze based on glycol Nitrite- and phosphate-free antifreeze based on glycol

1991-02-26

1991-11-12

Willis, Prince E.

Compositions

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

Organic components

252 75, 252 76, 252 79, 252 71, C09K 500

Patent

active

050645528

ABSTRACT:
A glycol-based antifreeze mixture which is free of nitrites and phosphates contains an alkali metal salt of a C.sub.4 -C.sub.16 -alkenylsuccinic acid, stabilized silicate and further corrosion-inhibiting additives.

REFERENCES:
patent: 3634240 (1972-01-01), O'Halloran
patent: 3966620 (1976-06-01), Bridger et al.
patent: 4455248 (1984-06-01), Wood
patent: 4629602 (1986-12-01), Gousetis et al.
patent: 4647392 (1987-03-01), Darden et al.
patent: 4759864 (1988-07-01), Van Neste et al.
patent: 4810404 (1989-03-01), Gousetis et al.
Kirth-Othmer Encyclopedia of Chemical Technology, Third Edition, vol. 3, pp. 79-95.
Kirth-Othmer Encyclopedia of Chemical Technology, Third Edition, vol. 20, p. 864.
Ullmanns Encyklopadie der technischen Chemie, 3rd Ed., vol. 20, p. 864.

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