ULTRAVIOLET-CURABLE COATING AGENT AND MOLDED ARTICLE

• Main Authors: TSUBOKURA, YUTAKA, FUKATSU, FUMIOKI, MACHIDA, YOSHINORI
• Format: Patent
• Language: English; French; German
• Published: 16.06.2010
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COLOUR PRINTING; CORRECTING FLUIDS; CORRECTION OF TYPOGRAPHICAL ERRORS; DYES; FILLING PASTES; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; INKS; LINING MACHINES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; PHYSICS; POLISHES; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS THEREFOR; WOODSTAINS

A ultraviolet-curable coating agent contains: a hydrophilic polymer having the specific structure represented by the following general formula (1); a polymerization-reactive urethane oligomer; a water-soluble monomer; a photo polymerization initiator; and a water-absorptive filler. The polymerization-reactive urethane oligomer is preferably formed of a carboxyl-group-containing dihydroxyl compound, polymer polyol, organic diisocyanate compound and hydroxyl-group-containing acrylic ester, and a number average molecular weight of the polymerization-reactive urethane oligomer is preferably 1000 to 10000. By applying the ultraviolet-curable coating agent onto a front face of a substrate, an ink-receiving layer having excellent ink absorptivity, drying characteristics of printed images, bleeding resistance, anti-tacking and water resistance can be formed. where: P represents an integer of 2 or more; R1 represents -H or -CH 3 ; R2 represents -H or an alkyl group represented by -C m H 2m +1 (in which m is an integer of 1 to 8); R3 represents an alkylene group represented by -C n H 2n - (in which n is an integer of 1 to 8); and R4 and R5 each represent -H or an alkyl group represented by -C o H 2o +1 (in which o is an integer of 1 to 8).