Polyphosphoric acid as a scale and corrosion inhibitor

Details Polyphosphoric acid as a scale and corrosion inhibitor Polyphosphoric acid as a scale and corrosion inhibitor

1982-09-20

1984-03-13

Hruskocki, Peter A.

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

252175, 2523892, 252389R, 422 18, C02F 508

Patent

active

044366280

ABSTRACT:
The instant invention is directed to a process for the inhibition of scale and corrosion formation in an aqueous system, comprising adding to the system about 0.1 to 100 ppm, by weight based on the total aqueous content of said system, of 103 to 115% polyphosphoric acid, or neutral salts thereof.

REFERENCES:
patent: 3130002 (1964-04-01), Fochs
patent: 3793194 (1974-02-01), Zecher
patent: 4018701 (1977-04-01), Ralston et al.
patent: 4108790 (1978-08-01), Fouroulis
patent: 4172032 (1979-10-01), Farley
patent: 4209398 (1980-06-01), Ii et al.
patent: 4297237 (1981-10-01), Boffardi
"Phospholeum.sup.R ", Monsanto Chemical Company Technical Bulletin I-210, Nov. 1961.

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