BLOCK COPOLYMERIZATION POLYESTER HAVING A LOW MELTING POINT WITH EXCELLENT ADHESIVE PROPERTY AND A MANUFACTURING METHOD THEREOF

摘要

PURPOSE: A block copolymerization polyester having a low melting point is provided to ensure a melting point lower than existing low melting point polyester using isophthalic acids and diethylene glycol and to secure dyeability and water absorption.;CONSTITUTION: A block copolymerization polyester having a low melting point is prepared by esterifying terephthalic acids, ethylene glycols, and diethylene glycols; adding isophthalic acids and ethylene glycols for secondary esterification. The polymerization degree(Pn) of the low melting point polyester is 60~90, a softening point is 90~110°C, a glass transition temperature(Tg) is 60~70°C, and an inherent viscosity(IV) is 0.55~0.75.;COPYRIGHT KIPO 2012