ACTIVE ENERGY RAY-CURABLE INK COMPOSITION AND PRINTED MATTER

• Main Authors: KINOSHITA, HIROSHI, YAMAMOTO, SEI, SUWA, YUKIE, OKUDA, TATSUSHI
• Format: Patent
• Language: English; French; Japanese
• Published: 01.10.2009
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; 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; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; PREPARATION OF CARBON BLACK; 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; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; USE OF MATERIALS THEREFOR; WOODSTAINS

Disclosed is an active energy ray-curable ink composition mainly composed of a coloring agent, a binder resin, and a radically polymerizable varnish and/or a radically polymerizable monomer. The coloring agent is a modified pigment wherein the surface of a pigment (A) is provided with a polymer (P) which is obtained by polymerizing a polymer (B), which is soluble in nonaqueous solvents, with at least one polymerizable unsaturated monomer (C), which is originally soluble in nonaqueous solvents but becomes insoluble or poorly soluble after polymerization. Also disclosed is a printed matter which has a coating film obtained by curing and drying the active energy ray-curable ink composition. L'invention porte sur une composition d'encre durcissable par un rayonnement d'énergie active composée principalement d'un agent colorant, d'une résine liante et d'un vernis polymérisable par voie radicalaire et/ou d'un monomère polymérisable par voie radicalaire. L'agent colorant est un pigment modifié, dans lequel la surface d'un pigment (A) est dotée d'un polymère (P) qui est obtenu par polymérisation d'un polymère (B), qui est soluble dans les solvants non aqueux, avec au moins un monomère insaturé polymérisable (C), qui est à l'origine soluble dans les solvants non aqueux mais qui devient insoluble ou faiblement soluble après polymérisation. L'invention porte également sur une matière imprimée qui a un film de revêtement obtenu par durcissement et séchage de la composition d'encre durcissable par un rayonnement d'énergie active.