Citation :

Babamurodov B.E., Turaev Kh.Kh., Nabiev D.A., Kholnazarov B.A., Djuraeva D.Sh., Nuraliev G.T., Atamuratova D.M., Sharipova F.S., "Innovative Synthesis and Properties of Terephthalic Acid-Based Phthalocyanine Pigments," International Journal of Engineering Trends and Technology (IJETT), vol. 73, no. 12, pp. 185-193, 2025. Crossref, https://doi.org/10.14445/22315381/IJETT-V73I12P115

Abstract

In this article, the optimal conditions for obtaining a new phthalocyanine pigment based on terephthalic acid were studied. Also, phthalic anhydride, terephthalic acid, urea, copper(I) chloride, calcium chloride, and ammonium heptamolybdate were used for synthesis. To establish the optimal synthesis conditions for the newly developed phthalocyanine pigment, various molar ratios of the initial reagents were examined. The best composition was determined to be 0.2:0.2:1:0.1:0.2:0.01, with the synthesis conducted at 130-135 °C for one Hour, yielding an average reaction efficiency of 91.1%. The chemical structure of the resulting phthalocyanine was characterized using Infrared (IR) and Ultraviolet (UV–Vis) Spectroscopy, while its thermal behavior was evaluated through Thermogravimetric (TG) and Differential Thermal (DTA) Analyses. In addition, the surface morphology and elemental composition were examined by Scanning Electron Microscopy (SEM) and elemental analysis. Alkyd-based coatings formulated with this phthalocyanine pigment were subsequently applied to various substrate plates for performance testing.

Keywords

Ammonium Heptamolybdate, Copper(I) Chloride, Calcium Chloride, Phthalocyanine Pigment, Phthalic Anhydride, Terephthalic Acid, Urea.

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