Synthesis and properties of novel acrylic polyester hyper-dispersant

Liu, Wei; Cheng, Liang; Yao, Xinding; Fang, Ruina; Liu, Guoji

doi:10.1007/s11998-016-9787-3

Cited by 9 publications

(7 citation statements)

References 37 publications

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“…The steric stabilisation process of pigment in dispersions includes the anchoring of the hydrophobic part of the dispersant compound to the pigment surface via van der Waals forces, whereas the hydrophilic part is solvated in the polar dispersion medium, leading to steric and electrostatic stabilisation of pigment particles. The electrostatic repulsion between particles originates from the electrically charged double layer around pigment particles, formed by the adsorbed dispersing agent 9–16 . Choosing the proper dispersing agent and its optimum amount is critical in achieving proper pigment stabilisation, viscosity and colour strength, and was studied in different applications by other authors 3,8–19 …”

Section: Introductionmentioning

confidence: 99%

“…The electrostatic repulsion between particles originates from the electrically charged double layer around pigment particles, formed by the adsorbed dispersing agent 9–16 . Choosing the proper dispersing agent and its optimum amount is critical in achieving proper pigment stabilisation, viscosity and colour strength, and was studied in different applications by other authors 3,8–19 …”

Section: Introductionmentioning

confidence: 99%

“…In terms of research of pigment dispersions and ink‐jet inks, most works concern formulations containing inorganic pigments, such as carbon black, 3,11,15,34 titania dioxide 12,14,15,35 and others, 15,17,18,28,29 as well as phthalocyanines, 7,14–16 among organic pigments. However, literature data related to other organic pigment types are limited.…”

Section: Introductionmentioning

confidence: 99%

“…The electrostatic repulsion between particles originates from the electrically charged double layer around pigment particles, formed by the adsorbed dispersing agent. [9][10][11][12][13][14][15][16] Choosing the proper dispersing agent and its optimum amount is critical in achieving proper pigment stabilisation, viscosity and colour strength, and was studied in different applications by other authors. 3,[8][9][10][11][12][13][14][15][16][17][18][19] The stability of the pigment dispersion is usually assessed by observing changes in the particle size, particle aggregation after storage, viscosity, pH and external appearance; for example, phase separation.…”

Section: Introductionmentioning

confidence: 99%

“…[9][10][11][12][13][14][15][16] Choosing the proper dispersing agent and its optimum amount is critical in achieving proper pigment stabilisation, viscosity and colour strength, and was studied in different applications by other authors. 3,[8][9][10][11][12][13][14][15][16][17][18][19] The stability of the pigment dispersion is usually assessed by observing changes in the particle size, particle aggregation after storage, viscosity, pH and external appearance; for example, phase separation. 3 The gloss and optical density of printouts provide further important information.…”

Section: Introductionmentioning

confidence: 99%

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Influence of different dispersants on the quality and stability of aqueous quinacridone magenta pigment dispersion for ink‐jet applications

Gaida¹,

Dziubek²,

Król³

et al. 2023

Coloration Technology

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The stability of water‐based pigment dispersions is a key factor in determining their utility in ink‐jet applications, and the appropriate choice of dispersant plays a special role. Among the pigment formulations tested to date, literature data on magenta pigments are very limited. Thus, the goal of this work was to study the influence of the type and loading of dispersants on the quality and stability of quinacridone magenta pigment dispersions. Three different commercially available dispersants were tested: (1) a cationic styrene‐maleic anhydride copolymer, (2) an anionic polyacrylate, and (3) a nonionic alkyl ethoxylate. Pigment and dispersing agents were analysed using the Fourier Transform–infrared method. The stability of pigment dispersions was determined by comparative studies of changes in the pigment particle size, viscosity, pH, filtration time, optical density and gloss during the accelerated ageing test. Moreover, Turbiscan AGS and LUMiFuge analysers were used for evaluations of the instability of the dispersions. The properties of each dispersing agent affected the performances of the different dispersants. The highest stability for the pigment formulations was provided using the nonionic dispersant (small particle size, < 60 nm; the lowest viscosity < 60 mPa·s at the optimal dispersant content; favourable results of the filtration test; the highest pigment dispersability, proven by optical density and gloss). The Turbiscan AGS and LUMiFuge results indicated that the stability of all tested quinacridone magenta pigment dispersions was excellent (Turbiscan Stability Index values below three, and no significant differences in transmission profiles, respectively). However, it was found that the measurement results were influenced by the viscosity of the formulations.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%