Antifreeze formulation useful for retarding precipitation of alu

Details Antifreeze formulation useful for retarding precipitation of alu Antifreeze formulation useful for retarding precipitation of alu

1980-12-05

1982-03-16

Weinblatt, Mayer

Compositions

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

Organic components

252180, C09K 500

Patent

active

043200230

ABSTRACT:
Precipitation of aluminum corrosion products from phosphate-borate ethylene glycol based antifreeze formulations is retarded by incorporating in the antifreeze a precipitation retarding amount of alkylene diphosphonic acid, e.g., 1-hydroxyethylidene-1,1-diphosphonic acid.

REFERENCES:
patent: 3214454 (1965-10-01), Blaser et al.
patent: 3738806 (1973-06-01), Feiler
patent: 3769220 (1973-10-01), Willard et al.
patent: 3900370 (1978-08-01), Germscheid et al.
patent: 3935125 (1976-01-01), Jacob
patent: 4046570 (1977-09-01), Fierens et al.
Radiator Reporter & Pricing Guide, vol. 6, No. 3, Mar. 1978.

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