Tri- Or Tetrazoles Patents (Class 252/301.29)
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Patent number: 8986436Abstract: The present invention relates to a new family of luminescent pigments consisting of a salt of two ruthenium(II) complex ions of opposite sign charges comprising N-chelating heterocyclic ligands and to their use in security applications to prevent counterfeiting. The invention also refers to ink compositions and to the security documents or secured goods comprising said luminescent pigments.Type: GrantFiled: February 10, 2012Date of Patent: March 24, 2015Assignee: Fábrica Nacional de Moneda y Timbre—Real Casa de la MonedaInventors: Guillermo Orellana Moraleda, David García Fresnadillo, Paloma Varela García De Oteyza, Javier Gamo Aranda, José Miguel Silván Pobes, Fernando Álvarez Martínez, Andrés Ruiz Quevedo
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Patent number: 8858831Abstract: Scintillator compositions are provided which include a solvent or matrix containing a fluorophore having the formula (I) and/or a fluorophore having the formula (II), wherein R1 and R2, being identical or different, are independently chosen from the group consisting of hydrogen, halogen, alkyl which optionally contains one or more heteroatoms, alkoxy, aryl and alkyne with an aryl end group; R3 is chosen from the group consisting of hydrogen, alkyl which optionally contains one or more heteroatoms, aryl, heterocycle, ether and ester; R4 and R5, being identical or different, are independently chosen from the group consisting of hydrogen, alkyl which optionally contains one or more heteroatoms, aryl, heterocycle, ether and ester, whereby the R4 and R5 groups are optionally combined to one cyclic structure; and R6, if present, is chosen from the group consisting of hydrogen, aryl and alkyl.Type: GrantFiled: April 11, 2012Date of Patent: October 14, 2014Assignee: Stichting Incas3Inventors: Peter Dijkstra, Heinrich Johannes Wörtche
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Publication number: 20120199250Abstract: A method of preparing an aluminum or aluminum alloy substrate to accept an adherent coating thereon is provided. The method includes the steps of degreasing the substrate, deoxidizing the substrate, and providing a prepaint conversion coating on the degreased and deoxidized substrate. The prepaint conversion coating composition comprises i) a source of fluoride ions; ii) a source of zirconium ions; iii) an acrylic resin; and iv) an optical brightener and forms a colorless, chromium-free conversion coating on the aluminum substrate that can be observed by exposing the treated substrate to UV light.Type: ApplicationFiled: February 4, 2011Publication date: August 9, 2012Inventors: Roberto Zoboli, Sara Salsa, Massimo Garzone
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Patent number: 8034420Abstract: Disclosed is a composition containing a compound having a benzotriazole ring structure and a phosphorescent compound.Type: GrantFiled: February 5, 2008Date of Patent: October 11, 2011Assignee: Sumitomo Chemical Company, LimitedInventor: Nobuhiko Akino
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Publication number: 20080135805Abstract: The invention relates to a fluorescent pigment comprising a) a melamine-formaldehyde polycondensation product, b) a distyryl biphenyl fluorescent whitening agent (FWA) of the formula (1), in which R1 represents hydrogen, chlorine or C1-C4alkoxy and M represents hydrogen, an alkaline or alkaline earth metal, ammonium or ammonium that is mono-, di-, tri- or tetrasubstituted by C1-C4alkyl or C2-C4hydroxyalkyl and, optionally, c) at least one additional fluorescent whitening agent, a process for its preparation and use thereof for the fluorescent whitening of paper, especially in coating.Type: ApplicationFiled: August 3, 2005Publication date: June 12, 2008Inventors: Fabienne Cuesta, Ted Deisenroth, Kamalesh Pai Fondekar, Ramachandra V. Joshi, Peter Rohringer, Uma Ganeshram, Josef Zelger
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Patent number: 6821649Abstract: In an organic EL device comprising a cathode, an anode, and two or more stacked organic layers therebetween including a light emitting layer, an electron injecting organic layer containing an organic salt or complex of a metal having a standard electrode potential of more negative than −1.8 V at 25° C. is formed close to the cathode by coating, and an organic layer containing a high molecular weight EL material is disposed close to the electron injecting organic layer. A multilayer structure of organic layers can be formed by coating, and the organic EL device has a high luminance, high efficiency, high reliability, long life and ease of handling.Type: GrantFiled: August 19, 2002Date of Patent: November 23, 2004Assignee: TDK CorporationInventors: Emiko Kambe, Masahiro Shinkai
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Publication number: 20030164475Abstract: Described is a process for preparing concentrated solutions or suspensions of anionic organic compounds which comprises a) acidifying an aqueous solution or suspension of an anionic organic compound containing salts and/or impurities to a pH of 4.5 or less, if the pH is above this value, so that b) the anionic organic compound is water-insoluble and precipitates in the form of the free acid, c) bringing the suspension to a salt content below 2% by weight, based on the total weight of the retentate, by means of ultrafiltration with a membrane having pore diameters of from 0.001 to 0.02 &mgr;m, and d) optionally washing out the salts with water having a pH below 4,5, e) optionally carrying out acid-free washing with water thereafter, and then f) concentrating, so that the amount of anionic organic compound is 5-50% by weight, and g) if desired, bringing the anionic organic compound into solution by adding an appropriate base.Type: ApplicationFiled: November 22, 2002Publication date: September 4, 2003Inventors: Jacek Malisz, Adolf Kaser, Rainer Kaufel, Holger Lautenbach, Elke Polley, Martina Hoffmann
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Patent number: 6391065Abstract: A water-dilutable UV light absorber composition and method for improving the lightfastness of dyed textiles is provided. The composition includes from about 5-75% by weight of an ultraviolet light absorbing agent selected from the group consisting of benzotriazole, benzophenone, and phenol substituted triazine; and from about 25-95% by weight of an organic solvent suitable for dissolving the ultraviolet light absorbing agent. The ultraviolet light absorbing agent is applied to the textiles in a concentration sufficient to result in an add-on in the range of between 0.4-4.0% by weight of the textiles when dry.Type: GrantFiled: November 3, 1995Date of Patent: May 21, 2002Assignee: Boehme Filatex, Inc.Inventor: Thomas W. Cooke
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Patent number: 6274065Abstract: Preparation of a solid fluorescent composition comprising (1) mixing a host chromophore and an effective amount of a pigment precursor in a solvent, then generating a pigment as guest chromophore in-situ from the pigment precursor, and, subsequently, isolating the mixture of the host and guest chromophores, thereby forming a solid solution, or (2) mixing a polymer as a matrix or a polymer precursor and a pigment precursor in a solvent, if desired in the presence of a chromophore being a host component, then generating a pigment in-situ from the pigment precursor (being the guest component if a host component is present), and, subsequently, isolating the mixture of polymer and pigment, and—if present—the host component, thereby forming a solid solution, wherein in all cases where there is a host component, the absorption spectrum of the pigment (guest chromophore) overlaps with the fluorescence emission spectrum of the host chromophore.Type: GrantFiled: February 3, 1998Date of Patent: August 14, 2001Assignee: Ciba Specialty Chemicals CorporationInventors: Takashi Deno, Kunihiko Kodama, Abul Iqbal, Brian Gerrard Devlin