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Mordant Yellow 3 for the preparation of new intercalated composite pigments

Tang P, et al.Ind. Eng. Chem. Res. 2012, 51, 32, 10542-10545

A novel intercalation compound pigment was produced through the direct coprecipitation method by incorporating Mordant Yellow 3 (MY3) anions into Zn-Al layered double hydroxides (LDH).
Synthetic procedure of ZnAl-MY3-LDH
· Zn(NO3)2·6H2O (5.95 g, 0.02 mols), Al(NO3)3·9H2O (3.75 g, 0.01 mols), and MY3 (8.33 g, 0.02 mols, [MY3]/[Al3+] = 2) were dissolved in water to make a mixed solution.
· NaOH (2.40 g, 0.06 mols) was dissolved in water to form an alkali solution.
· The resulting slurry was then aged at 90 °C for 48 h. All the processes were under a nitrogen atmosphere.
· The product cake was collected after six repetitive centrifugation and dispersion cycles with water and ethanol until the solution was nearly colorless and the obtained cake was dried at 80 °C to constant weight.