PIGMENT DISPERSANT, AQUEOUS PIGMENT DISPERSION COMPOSITION, AQUEOUS INK, INK CARTRIDGE, RECORDING APPARATUS AND RECORDING METHOD
PROBLEM TO BE SOLVED: To provide a pigment dispersant excellent in pigment storage stability in an aqueous medium including an organic solvent in a neutral or weakly alkaline region.SOLUTION: A pigment dispersant is a polymer having a structural unit represented by general formula (1) in the figure...
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Main Authors | , |
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Format | Patent |
Language | English Japanese |
Published |
18.10.2018
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Subjects | |
Online Access | Get full text |
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Summary: | PROBLEM TO BE SOLVED: To provide a pigment dispersant excellent in pigment storage stability in an aqueous medium including an organic solvent in a neutral or weakly alkaline region.SOLUTION: A pigment dispersant is a polymer having a structural unit represented by general formula (1) in the figure and a structural unit derived from a polystyrene macromonomer. In general formula (1), Rrepresents a hydrogen atom or a methyl group, and Xrepresents a divalent linking group except a single bond.SELECTED DRAWING: None
【課題】有機溶媒を含む水系媒体における中性乃至弱アルカリ性領域での顔料の保管安定性に優れる顔料分散剤の提供。【解決手段】顔料分散剤は、下記一般式(1)で表される構造単位とポリスチレンマクロモノマー由来の構造単位とを有する重合体である。ここで、一般式(1)中、R1は、水素原子又はメチル基を示し、X1は、単結合を除く2価の連結基を示す。【選択図】なし |
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Bibliography: | Application Number: JP20170058951 |