Aminoalkylenephosphonic acids and salts thereof and their use in

Details Aminoalkylenephosphonic acids and salts thereof and their use in Aminoalkylenephosphonic acids and salts thereof and their use in

1978-06-09

1980-01-01

Helfin, Bernard

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549 68, 260944, 252389A, 422 15, C07D33348

Patent

active

041818067

ABSTRACT:
Aminoalkylenephosphonic acids and their alkali metal salts prepared by a reaction utilizing a primary or secondary tetrahydrothiophenamine 1,1-dioxide or the hydrochloride thereof, an aldehyde or a ketone, and orthophosphorous acid are useful in the control of scale and sludge deposition in aqueous systems. When used in combination with known corrosion inhibitors they show synergistic results in inhibiting corrosion of metal surfaces in contact with an aqueous system that is normally corrosive to such metals.

REFERENCES:
patent: 3546216 (1970-12-01), Dunn
patent: 3705005 (1972-12-01), Cervi et al.
patent: 4101441 (1978-07-01), Hwa et al.
patent: 4120686 (1978-10-01), Paulus et al.

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