BLOCK POLYMER COMPOUND, POLYMER COMPOSITION CONTAINING THE SAME, IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS UTILIZING THE SAME

• Main Authors: NAKAZAWA, IKUO, IKEGAMI, MASAYUKI, TSUBAKI, KEIICHIRO, SUDA, SAKAE, SATO, KOICHI
• Format: Patent
• Language: English; French
• Published: 15.01.2004
• Edition: 7
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COLOUR PRINTING; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; CORRECTION OF TYPOGRAPHICAL ERRORS; DYES; FILLING PASTES; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; INKS; LINING MACHINES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; SELECTIVE PRINTING MECHANISMS; STAMPS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention provides a block polymer compound enabling satisfactory dispersion of a colorant in a solvent, and an ink composition containing such block polymer compound. The block polymer compound of the invention is a block polymer compound having at least three block segments, comprising block segments A, B and C arranged in succession, wherein the block segment C is most solvent attractive while the block segment A is most solvent repulsive, and at least either one of the block segments includes an ionic group or an acidic group. L'invention concerne un composé de polymère séquencé permettant une dispersion satisfaisante d'un colorant dans un solvant, et une composition d'encre contenant un tel composé de polymère séquencé. Le composé de polymère séquencé de l'invention comporte au moins trois segments séquencés, constitués des segments de séquence A, B et C disposés successivement, le segment C étant le plus attracteur de solvant, alors que le segment A est le plus répulsif de solvant, au moins l'un des segments de séquence comportant un groupe ionique ou acide.