Synergistic compositions for corrosion and scale control

Details Synergistic compositions for corrosion and scale control Synergistic compositions for corrosion and scale control

1977-10-25

1979-08-07

Weinblatt, Mayer

Compositions

Water-softening or purifying or scale-inhibiting agents

Plant or organic material containing

252 82, 252 86, 252181, 252389A, 252396, 210 58, 422 15, C02B 506

Patent

active

041637330

ABSTRACT:
Dimethylaminomethylenebis(phosphonic acid) is prepared by reacting dimethylformamide with phosphorous trichloride and treating the reaction mixture with alcohols or glycols and water. The phosphonic acid is combined with water soluble carboxylic acid polymers for use as a corrosion and scale inhibitor in aqueous systems. These compositions may also be combined with phosphorous acid and water soluble zinc salts.

REFERENCES:
patent: 3890228 (1975-06-01), Hwa et al.
patent: 3897209 (1975-07-01), Harris et al.
patent: 3957160 (1976-05-01), Ploger et al.
patent: 3963636 (1976-06-01), Harris et al.
patent: 4029696 (1977-06-01), Sommer

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