| 摘要 |
<p>A REINFORCED POLYESTER COMPOSITION HAVING AN IMPROVED STRENGTH The present invention is directed to a thermoplastic molding composition comprising a high molecular weight polyethylene terephthalate having an intrinsic viscosity of at least of 0.4 deciliters per gram, a reinforcing amount of a reinforcing agent, a crystallization rate promoter, and a polyepoxy compound which contains more than two terminal epoxy functionalities per molecule. The composition of the invention is characterized by its improved mechanical properties especially its tensile strength and unnotched Izod impact strength. In a preferred embodiment the process for the preparation of the composition of the invention entails treating the reinforcing agent with the polyepoxy compound prior to compounding.</p> |
