UV-VIS RADIATION RADICALLY CURABLE SECURITY INKS

• Main Authors: VEYA, Patrick, MONNEY, Angèle
• Format: Patent
• Language: English; French
• Published: 27.08.2020
• Subjects: ADHESIVES; BOOK COVERS; BOOKBINDING; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR; DYES; FILES; FILLING PASTES; INKS; LOOSE LEAVES; 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; PREPARATION OF CARBON BLACK; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR; SPECIAL PRINTED MATTER; TRANSPORTING; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; USE OF MATERIALS THEREFOR; WOODSTAINS

The present invention relates to the field of security inks suitable for printing security features on substrates, in particular on security documents or articles as well as security features made from said security inks, and security documents comprising a security feature made from said security inks. In particular, the invention provides UV-Vis radiation radically curable security inks comprising an ink vehicle and pigments comprising a flake-shaped non-metallic or metallic substrate comprising one or more at least partial coating layers, an at least partial surface treatment layer made of one or more surface modifiers selected from fluoro compounds. La présente invention se rapporte au domaine des encres de sécurité qui sont appropriées afin d'imprimer des caractéristiques de sécurité sur des substrats, en particulier sur des documents ou des articles de sécurité, ainsi que des caractéristiques de sécurité constituées à partir desdites encres de sécurité, et des documents de sécurité comprenant une caractéristique de sécurité constituée à partir desdites encres de sécurité. En particulier, l'invention concerne des encres de sécurité radicalement durcissables par rayonnement UV-Vis comprenant un véhicule à encre et des pigments comprenant un substrat métallique ou non métallique en forme de copeau comprenant une ou plusieurs couches de revêtement au moins partielles, une couche de traitement de surface au moins partielle constituée d'un ou de plusieurs modificateurs de surface choisis parmi des composés fluorés.