UV-CURABLE INK

• Main Authors: NOIROT, PIERRE-ANTOINE, MARSILLE, THIERRY
• Format: Patent
• Language: English; French
• Published: 21.06.2012
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; USE OF MATERIALS THEREFOR; WOODSTAINS

The present invention is related to a UV-curable printing ink comprising a binder system consisting of at least one reactive diluent and at least one polyurethane resin which is inert to said diluent, wherein said ink is solvent-less and said binder system has a viscosity in the range of 200-400 Poises, preferably 250-300 Poises, at 30°C and a shear rate between 40.000 s-1 and 70.000 s-1, as measured with a Laray viscometer. La présente invention concerne une encre d'impression durcissable aux UV comprenant un système de liant constitué d'au moins un diluant réactif et d'au moins une résine de polyuréthane qui est inerte pour ledit diluant, ladite encre étant sans solvant et ledit système de liant ayant une viscosité comprise dans l'intervalle de 200-400 Poises, de préférence 250-300 Poises, à 30 °C et un taux de cisaillement compris entre 40,000 s-1 et 70,000 s-1, mesuré avec un viscosimètre de Laray.