Free amine-containing polymeric dyes
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United States of America Patent
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May 10, 1983
Issued Date -
N/A
app pub date -
Sep 28, 1981
filing date -
Dec 8, 1975
priority date (Note) -
Expired
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Abstract
Soluble polymeric colorants composed of free amine groups and chromophoric groups covalently bonded to an organic backbone are disclosed. The number of free amine groups is not less than one-half the number of chromophoric groups. The colorants are characterized by being free of sulfonate, phosphonate and carboxylate groups. The preparation and use of these colorants is also disclosed.
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