METHOD FOR PRODUCING POLYESTER RESIN AND FIBER COMPRISING REGENERATED BIS(2-HYDROXYETHYL) TEREPHTHALATE

Abstract: a polyester resin according to the present invention comprises a regenerated bis(2-hydroxyethyl) terephthalate having high purity and containing diethylene glycol ester in an amount controlled below a certain level, and thus has heat resistance and quality comparable to the original resin even though the polyester resin is regenerated through chemical recycling. in particular, a polyester fiber comprising the polyester resin of the present invention has excellent strength, elongation, and processability, and can thus be used as an eco-friendly fiber product.

Inventor(s): Jun-Yong PARK, Do-Kyoon KIM, Sung-Gi KIM, Ji-Hun KIM, Kwang-Woo PARK, Ji Hye PARK, Joong Ki LEE

CPC Classification: C08J11/24 (containing hydroxyl groups)

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