Compositions – Water-softening or purifying or scale-inhibiting agents – Plant or organic material containing
Patent
1981-07-24
1983-02-08
Morgenstern, Norman
Compositions
Water-softening or purifying or scale-inhibiting agents
Plant or organic material containing
210699, 210701, 422 13, 422 15, 422 16, 524139, C02F 514
Patent
active
043728707
ABSTRACT:
Method and composition for controlling the deposition of scale imparting precipitates on structural parts of a system exposed to an aqueous medium containing scale imparting precipitates, under scale imparting conditions, are disclosed. Specifically, these precipitates are either calcium carbonate, calcium sulfate, calcium phosphate or mixtures thereof. The method and composition are also efficacious in dispersing inorganic matter, which may exist within a cooling system, boiler system, or the like. The composition comprises an acrylic acid/lower alkyl hydroxylated acrylate copolymer (I) which is administered to the system in combination with a telomeric phosphinocarboxylic acid compound (II) of the formula ##STR1## or salts thereof, wherein Y" is hydrogen or a methyl or ethyl residue; Y is hydrogen, a straight or branched alkyl residue having from 1-18 carbon atoms, a cycloalkyl residue having from 5-12 carbon atoms, an aryl residue, an aralkyl residue, a residue of the formula: ##STR2## wherein Y" has its previous significance; and the sum of n and m is an integer of a most 100; or a residue - OX wherein X is hydrogen or a straight or branched alkyl residue having 1-4 carbon atoms and Y' is a residue - OX, wherein X has its previous significance.
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Feuerstein Diane
Snyder William R.
Betz Laboratories Inc.
Morgenstern Norman
Page Thurman K.
Peacock Bruce E.
Ricci Alexander D.
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