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:
Oct. 06, 2020
Filed:
May. 04, 2018
Applicant:
Evonik Degussa Gmbh, Essen, DE;
Inventors:
Rainer Lomölder, Münster, DE;
Christoph Nacke, Schermbeck, DE;
Melanie Sajitz, Essen, DE;
Emmanouil Spyrou, Schermbeck, DE;
Dirk Hoppe, Nottuln, DE;
Assignee:
Evonik Operations GmbH, Essen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G 18/75 (2006.01); C08G 18/73 (2006.01); C08G 18/02 (2006.01); C08G 18/09 (2006.01); C08G 18/16 (2006.01); C08G 18/18 (2006.01);
U.S. Cl.
CPC ...
C08G 18/73 (2013.01); C08G 18/022 (2013.01); C08G 18/092 (2013.01); C08G 18/166 (2013.01); C08G 18/1875 (2013.01); C08G 18/755 (2013.01); C08G 18/758 (2013.01);
Abstract
A process for preparing trimers and/or oligomers of diisocyanates is disclosed along with a composition of trimers and/or oligomers formed from diisocyanates and monomeric diisocyanates obtainable by reaction of I. 5-94.999% by weight of A) at least one diisocyanate having a boiling point of less than 250° C. (at standard pressure) and/or