Antifreeze formulation containing phosphorous acid

Details Antifreeze formulation containing phosphorous acid Antifreeze formulation containing phosphorous acid

1991-11-13

1993-08-31

Lieberman, Paul

Compositions

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

Organic components

252 74, 252 77, 252 985, C01K 506

Patent

active

052406318

ABSTRACT:
The invention provides an alkylene glycol, preferably propylene glycol, anti-corrosive antifreeze concentrate composed of the glycol and small but effective amounts of borate, molybdate, tolyltriazole, phosphorous acid, optionally nitrate and silicate. The concentrate is suitably combined with water to form an internal combustion engine coolant which meets all ASTM testing criteria.

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