NONAQUEOUS PIGMENT DISPERSION COMPOSITION

• Main Authors: FUKUYAMA, YUKIHIRO, KUWAHARA, KAZUO, ITOI, AKITO, NAMBU, HIROMI, WAKABAYASHI, YUKI, ISHIKAWA, KAZUHIRO
• Format: Patent
• Language: English; French; German
• Published: 10.12.2008
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; LAKES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING; MORDANTS; NATURAL RESINS; ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

The present invention provides a nonaqueous pigment dispersant containing a copolymer having the following constituent units (a) and (b) : (a) a constituent unit derived from a nitrogen atom-containing polymerizable macromonomer having an ethylenic unsaturated double bond at one terminal, and (b) a constituent unit derived from a monomer unit having an ethylenic unsaturated double bond, being copolymerizable with the nitrogen atom-containing polymerizable macromonomer of constituent (a), and a pigment dispersion composition containing the dispersant, a pigment and a nonaqueous solvent. Also provided are a nonaqueous pigment dispersion composition, containing a pigment (A), a nonaqueous solvent (B), and a polymer (C) having a constituent unit (c1) derived from a nitrogen atom-containing polymerizable macromonomer having an ethylenic unsaturated double bond at one terminal, a constituent unit (c2) derived from a polymerizable macromonomer having an ethylenic unsaturated double bond at one terminal, but having no nitrogen atom, and a constituent unit (c3) derived from a monomer having an ethylenic unsaturated double bond, being copolymerizable with the macromonomers of the constituent units and having a difference (”SP) in solubility parameter between the monomer and a nonaqueous solvent (B) of 1.0 or more, and a production method thereof.