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:
Mar. 20, 2007
Filed:
Nov. 10, 2004
Michael Paul Ekart, Kingsport, TN (US);
Mary Therese Jernigan, Kingsport, TN (US);
Cory Lee Wells, Gray, TN (US);
Larry Cates Windes, Kingsport, TN (US);
Michael Paul Ekart, Kingsport, TN (US);
Mary Therese Jernigan, Kingsport, TN (US);
Cory Lee Wells, Gray, TN (US);
Larry Cates Windes, Kingsport, TN (US);
Eastman Chemical Company, Kingsport, TN (US);
Abstract
A process for crystallizing a polyester polymer by introducing a molten polyester polymer, such as a polyethylene terephthalate polymer, into a liquid medium at a liquid medium temperature greater than the Tof the polyester polymer, such as at a temperature ranging from 100° C. to 190° C., and allowing the molten polyester polymer to reside in the liquid medium for a time sufficient to crystallize the polymer under a pressure equal to or greater than the vapor pressure of the liquid medium. A process flow, underwater cutting process, crystallization in a pipe, and a separator are also described.