Polymers of maleic acid with amines
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United States of America Patent
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Nov 18, 1997
Grant Date -
N/A
app pub date -
May 22, 1995
filing date -
Oct 6, 1993
priority date (Note) -
Expired
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Abstract
Polymers of maleic acid may be prepared by thermally polymerizing malic acid, maleic acid or fumaric acid with less than one equivalent of ammonia. The polymers are modified by the incorporation of amines, carboxylic acids or combinations thereof. The polymers formed are excellent inhibitors of alkaline earth salt deposition, dispersants, tartar control additives, detergent additives, and water treatment agents.
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