RADIATION-CURABLE INKS FOR FLEXOGRAPHIC AND SCREEN-PRINTING APPLICATIONS FROM MULTIFUNCTIONAL ACRYLATE OLIGOMERS

• Main Authors: LISA M. HAHN, SRIDEVI NARAYAN-SARATHY
• Format: Patent
• Language: English
• Published: 31.03.2009
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DYES; FILLING PASTES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

THE PRESENT INVENTION RELATES GENERALLY TO RADIATION-CURABLE INK FORMULATIONS, AND PARTICULARLY, BUT NOT BY WAY OF LIMITATION, TO A FAMILY OF RADIATION-CURABLE INK FORMULATIONS SPECIFICALLY FOR FLEXOGRAPHIC AND SCREEN PRINTING APPLICATIONS. THE INVENTIVE INK FORMULATIONS ARE BASED ON MULTIFUNCTIONAL ACRYLATE RESINS FORMED BY THE REACTION OF ACRYLATE MONOMERS AND OLIGOMERS WITH ß-KETO ESTERS (E.G., ACETOACETATES), ß-DIKETONES (E.G., 2, 4-PENTANEDIONE), ß-KETO AMIDES (E.G., ACETOACETANILIDE, ACETOACETAMIDE), AND/OR OTHER ß-DICARBONYL COMPOUNDS THAT CAN PARTICIPATE IN MICHAEL ADDITION REACTIONS.