Disclosed is a copolyester resin composed mainly of terephthalic acid,
ethyleneglycol, 1,4-cyclohexanedimethanol, polyethyleneglycol bisphenol-A and a
multifunctional monomer. According to the current invention, the multifunctional
monomer and polyethyleneglycol bisphenol-A are additionally copolymerized along
with 1,4-cyclohexanedimethanol, whereby the resultant copolyester resin can have
low haze and high melt viscosity and melt strength, with superior moldability due
to low melt pressure. In addition, extrusion blow molded articles and profile extruded
articles, such as bottles and tubes, are provided by use of the copolyester resin
having superior properties.
