Composition for inhibiting scale in water systems
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United States of America Patent
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Oct 1, 1991
Grant Date -
N/A
app pub date -
Jun 10, 1988
filing date -
Jun 10, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention is directed to the treatment of aqueous systems and specifically to the inhibition and removal of scale and solid deposits in industrial water systems. The invention comprises the use of substoichiometric amounts of an inhibitor composition comprising at least one acrylic polymer, at least one water-soluble polymer derived from maleic acid or its anhydride, a water-soluble organic phosphonate and at least one water-soluble chelating agent. This inhibitor composition is added to the water in the systems in amounts ranging from about 0.01 to 600 parts of the inhibitor per million parts by weight of the water.
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