| 摘要 |
<p>Polyester compositions are disclosed that are suitable for molding, and that include polyester polymers or copolymers having incorporated therein steel particles that improve the reheat properties of the compositions. Processes for making such compositions are also disclosed. The steel particles may be incorporated in the polyester by melt compounding, or may be added at any stage of the polymerization, such as during the melt-phase of the polymerization. A range of particle sizes may be used, as well as a range of particle size distributions. The polyester compositions are suitable for molding, and for use in packaging made from processes in which a reheat step is desirable.</p> |
