Process for inhibiting the formation of mineral deposits from a

Details Process for inhibiting the formation of mineral deposits from a Process for inhibiting the formation of mineral deposits from a

1980-10-01

1981-07-21

Weinblatt, Mayer

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

252 82, 252180, 252DIG11, 252525, 252544, 25217416, 260932, B01D 2101

Patent

active

042797586

ABSTRACT:
A process for inhibiting the formation of mineral deposits from a water using novel N,N'-dialkylureidomethane diphosphonic acids and their alkaline salts having the formula: ##STR1## wherein R.sub.1 and R.sub.2 represent separate alkyl groups having one to three carbon atoms or a ring-forming alkylene group having two or three carbon atoms and R is hydrogen or an alkali metal.

REFERENCES:
patent: 3763281 (1973-10-01), Weil
patent: 3957160 (1976-05-01), Ploger et al.
patent: 3989727 (1976-11-01), Birum
patent: 4003965 (1977-01-01), Birum
patent: 4098814 (1978-07-01), Sommer et al.
patent: 4157364 (1979-06-01), Buckman et al.

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