Methods for introducing additives into polyethylene terephthalate
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United States of America Patent
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Jul 20, 2010
Grant Date -
Aug 4, 2005
app pub date -
Oct 8, 2004
filing date -
Dec 15, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
The invention is a method for the late introduction of additives into polyethylene terephthalate. The method employs a reactive carrier that functions as a delivery vehicle for one or more additives. The reactive carrier reacts with the polyethylene terephthalate, thereby binding the reactive carrier in the polyethylene terephthalate resin and preventing the emergence of the reactive carrier and additives from the polyethylene terephthalate during subsequent thermal processing.
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