Liquid purification or separation – Processes – Preventing – decreasing – or delaying precipitation,...
Patent
1986-11-10
1990-02-06
Hruskoci, Peter
Liquid purification or separation
Processes
Preventing, decreasing, or delaying precipitation,...
1662441, 252 8555, 252180, C02F 510
Patent
active
048986771
ABSTRACT:
The deposition of scale-imparting precipitates in aqueous media containing significant amounts of barium sulfate and other scale forming salts (e.g., calcium carbonate and calcium sulfate) is inhibited and controlled by adding a scale-inhibiting amount of a water-soluble acrylic acid copolymer with up to about 30% by weight of a vinyl sulfonate, with the copolymer having a weight average molecular weight of below about 90,000.
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Hruskoci Peter
National Starch and Chemical Corporation
Ronning, Jr. Royal N.
Szala Edwin M.
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