Scale inhibition

Details Scale inhibition Scale inhibition

1991-09-23

1992-11-03

Silverman, Stanley S.

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

252175, 252180, 252181, 2523892, 422 15, 210700, C02F 510

Patent

active

051606305

ABSTRACT:
A method of inhibiting the precipitation of calcium carbonate scale from an aqueous system, comprising adding to the aqueous system, a compound having the formula I: ##STR1## in which M is hydrogen or an alkali metal ion, an ammonium ion or a quaternized amine radical; R.sub.1 is hydrogen or methyl; and n is an integer ranging from 1 to 10.

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patent: 4374733 (1983-02-01), Snyder et al.
patent: 4563284 (1986-07-01), Amjad
patent: 4681686 (1987-07-01), Richardson et al.

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