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:
Sep. 13, 2011
Filed:
Jun. 02, 2009
Fritz Wilhelm, Karben, DE;
Michael Reisen, Frankfurt am Main, DE;
Ludwig Hoelting, Bruchkoebel, DE;
Peter Seidel, Hanau, DE;
Peter Reichwein, Dornburg, DE;
Fritz Wilhelm, Karben, DE;
Michael Reisen, Frankfurt am Main, DE;
Ludwig Hoelting, Bruchkoebel, DE;
Peter Seidel, Hanau, DE;
Peter Reichwein, Dornburg, DE;
Lurgi Zimmer GmbH, Frankfurt am Main, DE;
Abstract
Polyesters such as polyethylene, polypropylene and polybutylene terephthalate are made from melts of precondensates of polyesters by first conducting vapors comprising precondensate components distributed in the form of an aerosol through a polycondensation reactor in which precondensate components are deposited on the reactor wall and in an outlet chamber of the reactor on a separator. Then the deposits are conducted to the unstirred discharge sump. Upper layers of the discharge sump are continuously recirculated in the stirred reactor area and thus subjected to reconversion and further polycondensation.