Reaction of .alpha.-phosphorus containing carboxylic acids with

Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow

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252180, 252 82, 252389A, 2605024P, 422 15, 106 14, 106 12, C02B 506, C23F 1116

Patent

active

041727878

ABSTRACT:
Novel compounds and the use of these compounds in inhibiting corrosion and scale in open cooling systems containing ferrous materials which are: ##STR1## These compounds are prepared by a carboxylic acid-phosphonic acid interchange in the general reaction involving .alpha.-phosphorus containing carboxylic acids as reactants:

REFERENCES:
patent: 3297578 (1967-01-01), Crutchfield et al.
patent: 4077997 (1978-03-01), Blum et al.

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