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:
Nov. 23, 2010
Filed:
Aug. 08, 2006
Frederick Leslie Colhoun, Kingsport, TN (US);
Kenrick Lyle Venett, Blountville, TN (US);
Bruce Roger Debruin, Lexington, SC (US);
Frederick Leslie Colhoun, Kingsport, TN (US);
Kenrick Lyle Venett, Blountville, TN (US);
Bruce Roger DeBruin, Lexington, SC (US);
Eastman Chemical Company, Kingsport, TN (US);
Abstract
A process for preparing modified polymer by withdrawing a slip stream of polymer melt from the discharge line of a continuous polymerization reactor, admixing in a highly modified polymeric additive into the polymer melt within the slip stream, then introducing the modifier containing slip stream late in the manufacturing process prior to the slip stream withdrawal point. The improved processes of the invention have particular utility for large-scale, continuous reactor where transitions and short production runs are economically prohibitive thereby limiting the product breath. The process is particularly suited for producing a family of copolyesters using a continuous melt phase production process.