Acetylation of crude reaction products containing polymeric colorants
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United States of America Patent
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Nov 24, 1981
Issued Date -
N/A
app pub date -
Mar 10, 1980
filing date -
Sep 28, 1978
priority date (Note) -
Expired
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Abstract
Acetylation of residual primary and secondary alkyl amine groups in polymeric colorants, when said colorants are in the form of a crude preparation reaction mixture, is disclosed. The acetylation improves the colorants' water solubility.
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