Scale inhibition in water systems
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United States of America Patent
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Aug 11, 2009
Grant Date -
Mar 22, 2007
app pub date -
Jul 23, 2004
filing date -
Jul 23, 2003
priority date (Note) -
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Abstract
The present invention relates to use of compositions comprising: (a) a copolymer of an unsaturated phosphonic acid (or salt of such an acid) with an unsaturated sulphonic acid (or salt of such an acid) or an unsaturated carboxylic acid (or salt of such an acid); or (b) a terpolymer of an unsaturated phosphonic acid (or salt of such an acid) with an unsaturated sulphonic acid (or salt of such an acid) and an unsaturated carboxylic acid (or salt of such an acid). These compositions are used to control the formation of scale in water systems.
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