Polymeric colorants
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United States of America Patent
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N/A
Issued Date -
Apr 14, 2005
app pub date -
Aug 19, 2004
filing date -
Aug 19, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of coloring a thermoplastic resin without substantially altering its clarity comprising the steps of first, providing a melt comprising a thermoplastic resin, second, adding one or more polymeric colorants to the melt, and third, mixing the thermoplastic resin and the polymeric colorants to form a colored thermoplastic resin having substantially the same clarity as the uncolored thermoplastic resin. Also provided are methods of imparting deep color to a thermoplastic resin without substantially altering its clarity comprising the steps of first, providing a melt comprising a thermoplastic resin, second, adding one or more polymeric colorants to the melt, wherein the amount of colorant is sufficient to impart a deep color, and third, mixing the thermoplastic resin and the polymeric colorants to form a deeply colored thermoplastic resin. Also provided are colored thermoplastic resins made by the methods of the present invention.
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