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:
Feb. 22, 2022
Filed:
Jul. 06, 2017
Applicant:
Technip Zimmer Gmbh, Frankfurt am Main, DE;
Inventors:
Holger Bachmann, Weiterstadt, DE;
Rainer Linke, Butzbach, DE;
Eckhard Seidel, Frankfurt am Main, DE;
Michael Reisen, Frankfurt am Main, DE;
Reza Sarbandi, Frankfurt am Main, DE;
Assignee:
TECHNIP ZIMMER GMBH, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 63/78 (2006.01); C08G 63/183 (2006.01);
U.S. Cl.
CPC ...
C08G 63/78 (2013.01); C08G 63/183 (2013.01);
Abstract
A process for reducing the amount of hydroxyl-end-groups of a polyester, wherein the polyester is prepared from at least one dicarboxylic acid and at least one dihydroxy alcohol, and at least one additive selected from the group consisting of carboxylic acid anhydride and mono-isocyanate, and wherein the additive is added during a step of prepolycondensation and/or during a step of polycondensation and/or after a step of polycondensation.