Amino acid copolymers of maleic acid
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United States of America Patent
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Apr 18, 1995
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N/A
app pub date -
Oct 6, 1993
filing date -
Oct 6, 1993
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Expired
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Abstract
Polymers of maleic, fumaric or malic acids or maleic, fumaric or malic acid and ammonia with amino acids are prepared by heating at 180.degree.-350.degree. C., preferably 200.degree.-300.degree. C. The polymer formed may be converted to a salt by hydrolysis with a metal hydroxide or ammonium hydroxide.
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