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. 03, 2026
Filed:
Apr. 11, 2022
Evonik Operations Gmbh, Essen, DE;
Simone Schulte, Essen, DE;
Markus Hallack, Schermbeck, DE;
Michael Huth, Maintal, DE;
Juri Tschernjaew, Aschaffenburg, DE;
Stefan Fischer, Soest, DE;
Thomas Jüstel, Witten, DE;
Franziska Schröder, Steinfurt, DE;
Sven Reetz, Gronau, DE;
Evonik Operations GmbH, Essen, DE;
Abstract
A water-based curable composition, for production of coatings having an antimicrobial property, contains at least one film-forming polymer, optionally at least one additive and/or at least one curing agent, and at least one up-conversion phosphor of the general formula (I): AB*BSiO:Ln,Ln. In the general formula (I), x=0.0001-0.0500; z=0.0000 or z=0.0001 to 0.3000 with the proviso that: y=x+z; A is selected from Mg, Ca, Sr and Ba; B is selected from Li, Na, K. Rb and Cs; B* is selected from Li, Na and K; and preferably B and B* are not the same. Additionally, Lnis selected from praseodymium (Pr), erbium (Er), and neodymium (Nd); and Lnis gadolinium (Gd). The phosphor, as a result of an aftertreatment, includes at least one material which has a band gap of greater than 6.0 electronvolts (eV) and is hydrolysis-stable.