Compositions and process for inhibiting corrosion of aluminum

Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Maintaining environment nondestructive to metal

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252 75, 252 76, 252389A, 252390, 252392, 422 14, 422 16, 422 17, 422 18, 422 19, C23F 1114, C23F 1116, C23F 1118

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044527586

ABSTRACT:
Antifreeze compositions and a process for inhibiting the corrosion of aluminum in contact with aqueous liquids are disclosed. The antifreeze compositions comprise a combination of an alkanolamine, an alkali metal phosphate, a heterocyclic nitrogen compound, as defined, and a conventional corrosion inhibitor in effective corrosion inhibiting amounts. The aqueous liquid can be an alcohol such as ethylene glycol.

REFERENCES:
patent: 1992689 (1935-02-01), Cox
patent: 2462694 (1949-02-01), Walker
patent: 2558030 (1951-06-01), Zisman
patent: 3090757 (1963-05-01), Berger
patent: 3502578 (1970-03-01), Raifsnider
patent: 3758493 (1973-09-01), Maddox
patent: 3932303 (1976-01-01), Hollingshad
patent: 3935125 (1976-01-01), Jacob
patent: 4000079 (1976-12-01), Rasp
patent: 4219433 (1980-08-01), Manabe
patent: 4389371 (1983-06-01), Wilson
Technical Bulletin No. 962 "Monateric 1000" published Dec. 1977 by Mona Industries, Inc.
Chemical Abstracts 88: 50724b, 1978.

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