The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 29, 2010
Filed:
Sep. 16, 2005
Zhiyong Xia, Kingsport, TN (US);
Stephen Weinhold, Kingsport, TN (US);
Alan Wayne White, Kingsport, TN (US);
Zhiyong Xia, Kingsport, TN (US);
Stephen Weinhold, Kingsport, TN (US);
Alan Wayne White, Kingsport, TN (US);
Eastman Chemical Company, Kingsport, TN (US);
Abstract
Polyester compositions are disclosed that include polyester polymers or copolymers having incorporated therein carbon-coated iron particles that improve the reheat properties of the compositions. Processes for making such compositions are also disclosed. The carbon-coated iron 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 use in packaging made from processes in which a reheat step is desirable.