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公开(公告)号：US20230295496A1
公开(公告)日：2023-09-21
申请号：US18185367
申请日：2023-03-16
CPC分类号： C09K11/77062 , C09D5/14 , C09D7/61 , C08K3/34
摘要： A process can be used for the preparation of an up-conversion phosphor of the general formula (I)
The process involves providing i) at least one lanthanoid salt, ii) a silicate or a silicon dioxide, iii) at least one alkaline earth metal salt and at least one alkali metal salt, and iv) at least one flux. The process then involves either mixing components i), ii), iii) and iv) by grinding to obtain a mixture; or mixing components i), ii), iii) and iv) in an organic polar or nonpolar solvent that is not a protic solvent by grinding to obtain a mixture, and precalcining the mixture. The process further involves calcining the mixture, and obtaining a silicate-based up-conversion phosphor of the general formula (I), preferably after cooling the material. At least 3.5% by weight of flux is used, based on the total amount of the reactants.-
公开(公告)号：US20230295495A1
公开(公告)日：2023-09-21
申请号：US18184431
申请日：2023-03-15
CPC分类号： C09K11/77062 , C01B33/32 , C01P2002/52 , C01P2006/60
摘要： A process can be used for the preparation of an up-conversion phosphor of the general formula (I):
A1-x-y-zB*yB2SiO4:Ln1x,Ln2z, (I).
The process involves preparing a mixture, introducing the mixture into a reaction chamber of a thermal apparatus, heating the mixture until a thermal treatment temperature is reached with a heating ramp, thermally treating the heated mixture for a holding time of at least 0.02 h, cooling the thermally treated material to room temperature while maintaining a cooling ramp, and obtaining a silicate-based lanthanoid ion-doped phosphor according to formula (I).-
公开(公告)号：US20220325176A1
公开(公告)日：2022-10-13
申请号：US17658664
申请日：2022-04-11
发明人： Simone SCHULTE , Markus Hallack , Michael Huth , Juri Tschernjaew , Stefan Fischer , Thomas Jüstel , Franziska Schröder , Sven Reetz
摘要： 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): A1-x-y-zB*yB2SiO4:Ln1x,Ln2z. 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, Ln1 is selected from praseodymium (Pr), erbium (Er), and neodymium (Nd); and Ln2 is 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.
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公开(公告)号：US20220325177A1
公开(公告)日：2022-10-13
申请号：US17658681
申请日：2022-04-11
发明人： Simone SCHULTE , Markus Hallack , Christina Janke , Sabine Krusenbaum , Bärbel Wolff , Thomas Jüstel , Stefan Fischer , Franziska Schröder , Sven Reetz , Michael Huth
IPC分类号： C09K11/77 , C09D5/14 , C09D5/22 , C09D7/61 , C09D175/04
摘要： A 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): A1-x-y-zB*yB2SiO4:Ln1x,Ln2z. 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, Ln1 is selected from praseodymium (Pr), erbium (Er), and neodymium (Nd); and Ln2 is gadolinium (Gd). The phosphor has been prepared using at least one halogen-containing flux.
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