Method of introducing an additive into a polymeric materials
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United States of America Patent
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Apr 4, 2017
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app pub date -
Jun 24, 2013
filing date -
Jun 28, 2012
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Abstract
Additives such as colorants may be incorporated into polymeric materials such as polyesters, such as in polyester fiber production, by use of a liquid formulation comprising colorant and a vehicle. The vehicle may comprise a functionalized pentaerythritol, trimethylolpropane or trimellitate. The liquid formulation is suitably contacted with the polymeric material in a melt processing apparatus.
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