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. 25, 2020
Filed:
Jul. 07, 2016
Applicant:
Covestro Deutschland Ag, Leverkusen, DE;
Inventors:
Hans Georg Grablowitz, Köln, DE;
Alexander Pross, Köln, DE;
Reiner Witkowski, Bottrop, DE;
Holger Breuer, Kaarst, DE;
Sven Gestermann, Leverkusen, DE;
Christian Joachim Hahn, Leverkusen, DE;
Stephan Schubert, Leverkusen, DE;
Joachim Ritter, Leverkusen, DE;
Assignee:
Covestro Deutschland AG, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 18/42 (2006.01); C08G 18/08 (2006.01); C08G 18/75 (2006.01); C08G 18/44 (2006.01); C08G 18/73 (2006.01);
U.S. Cl.
CPC ...
C08G 18/4238 (2013.01); C08G 18/0828 (2013.01); C08G 18/0895 (2013.01); C08G 18/44 (2013.01); C08G 18/73 (2013.01); C08G 18/755 (2013.01); C08G 18/758 (2013.01);
Abstract
The application relates to a process for continuously producing aqueous polyurethane dispersions, which is characterized by the use of micro structured mixing elements and addition of water twice during the dispersion step. The energy input in the mixing of the dispersion is low. In addition, the application describes an apparatus suitable for execution of the aforementioned process.