METHOD FOR IDENTIFYING ARTICLES AND PROCESS FOR MAINTAINING SECURITY

The invention is directed to a method wherein at least a portion of a luminescent coating disposed on a surface of an article is exposed to ultraviolet light causing the luminescent coating to exhibit luminescence, detecting the luminescence, causing a comparison to be made between the luminescence...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	REARDON DAMIEN F
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES BOOK COVERS BOOKBINDING CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DECORATIVE ARTS DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR DYES FILES FILLING PASTES INKS LOOSE LEAVES MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MOVABLE-STRIP WRITING OR READING APPARATUS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR SPECIAL DESIGNS OR PICTURES SPECIAL PRINTED MATTER TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The invention is directed to a method wherein at least a portion of a luminescent coating disposed on a surface of an article is exposed to ultraviolet light causing the luminescent coating to exhibit luminescence, detecting the luminescence, causing a comparison to be made between the luminescence and a predetermined standard, and classifying the article according to the comparison, wherein the luminescent coating has a luminescent chelate being a lanthanide and a ligand, the ligand being represented by the formula wherein R1 is alkyl, aryl, or heteroaryl; R2 is alkyl, aminoalkyl; aryl or heteroaryl.