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:
Aug. 26, 2025
Filed:
Dec. 05, 2019
Applicant:
Basf SE, Ludwigshafen am Rhein, DE;
Inventors:
Jerome Lohmann, Ludwigshafen am Rhein, DE;
Maximilian Lehenmeier, Ludwigshafen am Rhein, DE;
Norbert Effen, Ludwigshafen am Rhein, DE;
Martin Bussmann, Ludwigshafen am Rhein, DE;
Michael Bernhard Schick, Ludwigshafen am Rhein, DE;
Timo Benjamin Witt, Ludwigshafen am Rhein, DE;
Assignee:
BASF SE, Ludwigshafen am Rhein, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08L 67/02 (2006.01);
U.S. Cl.
CPC ...
C08L 67/02 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01);
Abstract
The present invention relates to a process for producing a (co)polyester, wherein the (co)polyester at least partially consists of 1,4-butylene dicarboxylate units, in a degassing plant, wherein the crude (co)polyester is degassed in the presence of 0.1% to 5% by weight, based on the total weight of the input materials, of an entraining agent at a pressure between 5 to 300 mbar.