Method of corrosion inhibition and compositions therefor

Details Method of corrosion inhibition and compositions therefor Method of corrosion inhibition and compositions therefor

1976-06-18

1977-07-05

Schafer, Richard E.

Compositions

Preservative agents

Anti-corrosion

21 27A, 252 855E, 252181, 2605025, C23F 1116, C23F 1110

Patent

active

040338967

ABSTRACT:
Phosphonomethyl amino carboxylates of the general formula ##STR1## wherein M.sub.1, M.sub.2 and M.sub.3 are each hydrogen, metal ion, ammonium ion or alkyl ammonium ion, Z is --CH.sub.2 PO.sub.3 M.sub.1 M.sub.2, C.sub.1.sub.-4 alkanol, C.sub.1.sub.-4 alkyl carboxylic acid, or C.sub.1.sub.-10 alkaminomethylene phosphonic acid radical, and Q is C.sub.3.sub.-15 alkylene, C.sub.3.sub.-15 alkenylene, or alkaryl radical are useful alone or in combination with one or more conventional corrosion inhibitor compounds to inhibit the corrosion of metals in aqueous systems.

REFERENCES:
patent: 3288846 (1966-11-01), Irani et al.
patent: 3298956 (1967-01-01), Irani et al.
patent: 3354215 (1967-11-01), Garner
patent: 3483133 (1969-12-01), Hatch et al.
patent: 3668237 (1972-06-01), Cyba
patent: 3705005 (1972-12-01), Cervi et al.
patent: 3969260 (1976-07-01), Clark

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