Corrosion inhibitors of steels and aqueous compositions of alkal

Details Corrosion inhibitors of steels and aqueous compositions of alkal Corrosion inhibitors of steels and aqueous compositions of alkal

1989-02-13

1990-10-16

Maples, John S.

Compositions

Preservative agents

Anti-corrosion

252 71, 252 74, 25238962, 25238954, C23F 1106

Patent

active

049632906

ABSTRACT:
This invention relates to corrosion inhibitors of steels, particularly carbon steels or low-alloy steels. They are ternary mixtures with synergetic action containing at least one strong base, at least one molybdate and at least one phosphate. This invention also relates to aqueous compositions of alkali metal halide containing said inhibitors. Such compositions are advantageously used as working fluid in high temperature absorption heat pump systems.

REFERENCES:
patent: 2384553 (1945-09-01), Kiffer
patent: 2755170 (1956-07-01), Stubblefield et al.
patent: 3030308 (1983-04-01), Agnew et al.
patent: 3218259 (1965-11-01), Verdieck et al.
patent: 3891568 (1975-06-01), Nishio et al.
patent: 4545925 (1985-10-01), Bosen
"Corrosive Preventive Lithium Composition" 58-224187A (Abstract).
"Corrosion Inhibition of Carbon-", 1049313C; 6001 Chemical Abstracts.
"Composition for Absorption Refrigerator", vol. 8, No. 205, Sep. 19, 1984, 59-93778.
"Composition for Absorption Type Freezer-", vol. No. 8 205, Sep. 19, 1984, 84-17304, 3/28.
"Inhibition of Pitting Corrosion-", 60010, vol. 94.
"Absorption Liq. for Absorption-", Mar. 8, 1978-53 (1978) 25288.
"Corrosion Preventing Method-", 52-97460.
Chemical Abstracts, Abstract No. 89, vol. 2, 11886g, R. Lipinski, "Low Molydenum-Phosphorus Coding Water Treatments".

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