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Published in: Journal of Coatings Technology and Research 6/2022

26-08-2022

Polyurethane prepolymers: an efficient dispersant core for sublimation inkjet inks

Authors: Ahmed S. Ahmed, Mohammed A. Mekewi, El-Said H. El-Mosallamy, Mahmoud A. Ibrahim, Ahmed K. Elziaty

Published in: Journal of Coatings Technology and Research | Issue 6/2022

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Abstract

In this study, the modification of toluene diisocyanate “TDI”-based prepolymers was performed using three different polyols (trimethylol propane “TMP,” glycerol and castor oil). The prepared modified prepolymers were terminated using amino-polyether (Jeffamine M-2070) and maleic acid-modified polyethylene glycol “PEG 1000” to obtain dispersing agents for water-based disperse dye inkjet inks. Dispersants T1–T5 (based on TMP), dispersants G1–G5 (glycerol) and dispersants C1–C5 (castor oil) were characterized using FTIR to monitor the reaction progress. Inkjet inks made using these dispersants were characterized by particle size, dynamic surface tension, rheology profile and accelerated stability against commercial dispersant. The results revealed that glycerol and TMP-based dispersants provided optimum performance as compared to commercial standard, while castor oil-based dispersants failed the wettability and dispersion stability tests.

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Metadata
Title
Polyurethane prepolymers: an efficient dispersant core for sublimation inkjet inks
Authors
Ahmed S. Ahmed
Mohammed A. Mekewi
El-Said H. El-Mosallamy
Mahmoud A. Ibrahim
Ahmed K. Elziaty
Publication date
26-08-2022
Publisher
Springer US
Published in
Journal of Coatings Technology and Research / Issue 6/2022
Print ISSN: 1547-0091
Electronic ISSN: 1935-3804
DOI
https://doi.org/10.1007/s11998-022-00658-2

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