Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Robert E. Trotter0
Gary J. Wilson0
Gene Parrish0
John Harvey Eng0
Carl J. Giardino0
Daniel Albert Green0
Emily A. Blum0
Date of Patent
May 12, 2009
Patent Application Number
11638919
Date Filed
December 14, 2006
Patent Primary Examiner
Patent abstract
This invention relates to a continuous process for production of poly(trimethylene terephthalate), wherein gaseous 1,3-propanediol by product resulting from the process is condensed in a condenser, and a portion of the condensed by-product is recycled back into the process.
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