Scale and corrosion inhibitors
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United States of America Patent
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Nov 9, 2004
Grant Date -
Jul 31, 2003
app pub date -
Dec 30, 2002
filing date -
May 5, 2000
priority date (Note) -
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Abstract
A scale and corrosion inhibitor for use in the treatment of water comprises at least one oxyalkylene unit and at least one phosphonate unit (e.g. a unit derived prom a mono- or di-phosphonic acid such as VPA or VDPA). Inhibitors according to the present invention have been found to exhibit both scale-inhibiting and corrosion-inhibiting properties, especially in the treatment of cooling water and water used in oilfield applications.
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