Thermoplastic compositions containing anthraquinone polysulfonamide colorants
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United States of America Patent
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Sep 19, 2000
Grant Date -
N/A
app pub date -
Aug 7, 1997
filing date -
Sep 3, 1996
priority date (Note) -
Expired
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Abstract
Thermoplastic compositions containing certain anthraquinone polysulfonamide colorants incorporated therein as toners or colorants. The anthraquinone colorant moieties which are incorporated into the polymer chain of the polysulfonamide colorants are not leachable, sublimable or extractable and do not exude from the thermoplastic compositions. The anthraquinone polysulfonamide colorants may be added to the thermoplastic polymers during production or melt blended with the polymer by conventional techniques to produce transparent thermoplastic compositions useful for a variety of end uses where nonmigrating or nonextractable colorants are needed.
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