Aminomethylphosphonic acid and polymaleic anhydride combinations

Details Aminomethylphosphonic acid and polymaleic anhydride combinations Aminomethylphosphonic acid and polymaleic anhydride combinations

1981-12-16

1983-08-30

Gluck, Irwin

Compositions

Preservative agents

Anti-corrosion

106 1412, 106 1414, 106 1415, 106 1418, 210697, 210700, 252 855E, 252181, 422 16, 422 17, 422 18, C23F 1118, C23F 1114, C23F 1116

Patent

active

044015879

ABSTRACT:
A method of inhibiting corrosion of low carbon steel in an aqueous system comprising treating said system with 1.0 to 300 parts per million by weight of the total aqueous content of said system, of a composition comprising aminomethylphosphonic acid compounds and polymaleic anhydride or amine adducts thereof in a weight ratio of from 10:1 to 1:10.

REFERENCES:
patent: 2358222 (1944-09-01), Fink et al.
patent: 2539305 (1951-01-01), Hatch
patent: 2723956 (1955-11-01), Johnson
patent: 2742369 (1955-04-01), Hatch
patent: 3289734 (1966-12-01), Robertson
patent: 3293152 (1966-12-01), Herbert et al.
patent: 3434969 (1969-05-01), Ralston
patent: 3483133 (1969-12-01), Hatch et al.
patent: 3578589 (1971-05-01), Hwa et al.
patent: 3715307 (1973-02-01), Johnson
patent: 3762873 (1973-10-01), Oude Alink
patent: 4297237 (1981-10-01), Boffardi

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