Metal corrosion inhibitor

Details Metal corrosion inhibitor Metal corrosion inhibitor

1980-03-31

1982-07-06

Willis, Jr., P. E.

Compositions

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

Organic components

252 76, 252 77, 252 781, 252 79, 252389A, 252391, 252392, C09K 500, C23F 1118

Patent

active

043382096

ABSTRACT:
Metal corrosion inhibitor comprising (a) benzoic acid and/or a benzoate, (b) nitrous acid and/or a nitrite, (c) phosphoric acid and/or a phosphate, and (d) at least one selected from mercaptobenzothiazole, its salts, benzotriazole and tolyltriazole, which can exhibit excellent anti-corrosive property to various metals for a long term and can be diluted with an aqueous liquor and can be employed in combination with usual anti-freezing agents.

REFERENCES:
patent: 2054282 (1936-09-01), Clarkson et al.
patent: 2426496 (1947-08-01), Farley
patent: 2739871 (1956-03-01), Senkus
patent: 3240708 (1966-03-01), Dulat et al.
patent: 3291741 (1966-12-01), Monroe et al.
patent: 3414519 (1968-12-01), Beynon
patent: 3425954 (1969-02-01), Ruzevick et al.
patent: 3769220 (1973-10-01), Willard et al.
patent: 3876553 (1975-04-01), Kader
patent: 4160740 (1979-07-01), Sweet
"British Standard Specification for Corrosion-Inhibited Ethanediol Antifreeze for Water-Cooled Engines", British Standards Institution, B.S. 3151:1959.

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