Novel polymers
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United States of America Patent
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Issued Date -
Jun 28, 2007
app pub date -
Sep 2, 2004
filing date -
Sep 2, 2003
priority date (Note) -
Abandoned
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Abstract
A polymer of formula (I) wherein: R and R' are each independently selected from hydrogen, a hydroxyl group, a carboxyl group, an alkyl, aryl or alkaryl group or a hydroxy--or carboxy substituted--alkyl, aryl or alkaryl group provided that R and R' together have a total of less than 23 carbon atoms and n is greater than 1; X is hydrogen or a cation or an alkyl group; one of R.sup.2, R.sup.3, R.sup.4, R.sup.5 is a phosphonate or a sulphonate group and the remainder of R.sup.2, R.sup.3, R.sup.4, R.sup.5 are each independently selected from hydrogen, alkyl, aryl, alkaryl, alkoxy, hydroxy, hydroxy or carboxy substituted alkyl, phosphonate or sulphonate groups and a is from 1 to 5; R.sup.6, R.sup.7, R.sup.8, R.sup.9 are each independently selected from hydrogen, alkyl, aryl, alkaryl, hydroxy, alkoxy, hydroxy or carboxy substituted alkyl or carboxy groups and b is from 5 to 200. The polymer has uses in the fields of water treatment and corrosion inhibition.
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