PIGMENT DISPERSION AND COLORING COMPOSITION CONTAINING THE SAME

• Main Authors: KATAYAMA KAZUYA, TANAKA DAIKI
• Format: Patent
• Language: English; Japanese
• Published: 10.01.2019
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DYES; FILLING PASTES; FREQUENCY-CHANGING; INKS; LAKES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MORDANTS; NATURAL RESINS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PHYSICS; POLISHES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

To provide a pigment dispersion capable of providing a coloring composition good in dispersion stability and good in storage stability even when an epoxy group-containing component is contained in a coated film formation component.SOLUTION: There is provided a pigment dispersion containing a pigment, a dispersant and a solvent, excluding quaternary ammonium salt, in which the dispersant is a block polymer having a linear structure with a first block having at least one kind selected from a constitutional unit represented by the formula (1) or the like at an end part and no basic group. Rand Rrepresent each independently H, a monovalent aliphatic hydrocarbon group having 1 to 12 carbon atoms, or a monovalent aromatic hydrocarbon group having 6 to 12 carbon atoms, and at least one of them is not H, Rrepresents H or a monovalent hydrocarbon group having 1 to 4 carbon atoms.SELECTED DRAWING: None 【課題】分散安定性が良好で、かつ、塗膜形成成分にエポキシ基含有成分が含まれる場合でも、保存安定性の良好な着色組成物を提供可能な顔料分散体の提供。【解決手段】顔料、分散剤及び溶剤を含む顔料分散体（但し、４級アンモニウム塩を含むものを除く）であって、分散剤が、式（１）等で表される構成単位から選択される少なくとも１種を有する第１ブロックを一方の端部に有する直鎖状の構造を有し且つ塩基性基を有さないブロック重合体である、顔料分散体。（Ｒ１ａ、Ｒ１ｂは、其々独立に、Ｈ、炭素数１〜１２の１価の脂肪族炭化水素基又は炭素数６〜１２の１価の芳香族炭化水素基を表し、且つ、少なくとも一方がＨではない。Ｒ２はＨ又は炭素数１〜４の１価の炭化水素基を表す。）【選択図】なし