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:
Nov. 26, 2024
Filed:
Oct. 05, 2022
Applicant:
Evonik Operations Gmbh, Essen, DE;
Inventors:
Emmanouil Spyrou, Schermbeck, DE;
Andrea Henschke, Dülmen, DE;
Elke Gollan, Herne, DE;
Nicole Fresmann, Haltern am See, DE;
Jessika Schüller, Gunderath, DE;
Assignee:
Evonik Operations GmbH, Essen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 18/80 (2006.01); C08G 18/75 (2006.01); C08G 18/79 (2006.01);
U.S. Cl.
CPC ...
C08G 18/8012 (2013.01); C08G 18/755 (2013.01); C08G 18/791 (2013.01); C08G 18/798 (2013.01); C08G 18/8025 (2013.01); C08G 18/8074 (2013.01);
Abstract
The present invention relates to a process for producing a solid, internally and externally blocked polyurethane curing agent based on a (cyclo)aliphatic polyisocyanate, in which, in the sequence of steps a) to d),