| 摘要 |
A polyester composition is provided to improve surface adhesion while maintaining transparency and mechanical properties of a polyester resin. A polyester composition comprises 0.05-15 weight% of an epoxy-based chain extender and 85-99.95 weight% of a polyester resin. The chain extender is an acrylic and styrenic polymer having 3-9 epoxy reactive groups. The polyester resin is polyethylene terephthalate. The chain extender is a polymerization product of (meth)acrylate having the epoxy reactive groups and a styrene monomer and has average molecular weight(Mw) of 5,000-7,000.
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