Engine antifreeze coolant composition

Details Engine antifreeze coolant composition Engine antifreeze coolant composition

1993-10-05

1995-02-07

Green, Anthony

Compositions

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

Organic components

106 13, 252 74, 252 75, 252 76, 252 77, 252 781, 252 79, C09K 500

Patent

active

053873602

ABSTRACT:
An engine antifreeze coolant composition comprising a major amount of glycols as the main constituent which contains at least one conventional corrosion inhibitor except silicates, and about 0.005 to about 0.5% by weight of citric acid and/or salts thereof as an essential constituent. The compositions are pollution-free and nontoxic, and have a good corrosion-preventing effect on metallic materials such as aluminum alloys for use in internal combustion engines.

REFERENCES:
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patent: 4389371 (1983-06-01), Wilson et al.
patent: 4390439 (1983-06-01), Schwartz et al.
patent: 4450088 (1984-05-01), Wilson et al.
patent: 4452758 (1984-06-01), Wilson et al.
patent: 4455248 (1984-06-01), Wood
patent: 4528108 (1985-07-01), Grover
patent: 4587028 (1986-05-01), Darden
patent: 4810404 (1989-03-01), Gousetis et al.
patent: 4851145 (1989-07-01), Van Neste et al.

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