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:
Apr. 21, 2009
Filed:
Aug. 25, 2006
Brigitta Otto, Milow, DE;
Rainer Linke, Butzbach, DE;
Roland Schafer, Bad Homburg, DE;
Holger Bachmann, Weiterstadt, DE;
Brigitta Otto, Milow, DE;
Rainer Linke, Butzbach, DE;
Roland Schafer, Bad Homburg, DE;
Holger Bachmann, Weiterstadt, DE;
Lurgi Zimmer GmbH, Frankfurt, DE;
Abstract
The invention relates to a method for producing a granulate with a low acetaldehyde content and improved processing properties from a high-viscosity polyester melt, wherein the polyester melt strand is fragmented under water at the highest possible temperature, the accompanying water is separated from the granulate with the least possible cooling of the granulate, the low-water granulate obtained in this way is passed after removal of the water directly into a dealdehydisation container and the granulate in the dealdehydisation container is treated with a flow of rinsing air, plus a device for carrying out this method.