Preparation of polyurethane coating formulation based on dihydropyridine derivatives as an insecticide and antifungal additives for surface coating applications

Abstract Pyridine derivatives are prepared and evaluated before being incorporated into polyurethane coating formulations to create antifungal insecticidal compositions. Different analyses, including Fourier transform infrared (FTIR), mass, proton nuclear magnetic resonance ( 1 HNMR), carbon-13 13 C NMR) spectra, were used confirm the synthesized compounds. The material has been coated using a mixture. Gloss, scratch resistance, flexibility, adhesion some of attributes investigated; mechanical capabilities include impact resistance shore hardness, physicochemical properties such as chemical (PU) samples also investigated. PU coatings applied substrates measure properties. cast films measured. results experiments revealed that all based on dihydropyridine had good which varied from > 1.5 2 kg. While reducing gloss value 65 85, there is no effect compounds in other test. These have excellent except alkali evidenced by their observed insecticide activities indicated dry wood with promising for these insects fungi, comparison paint blank. inhibition zones diameter compound 25.1 ± 0.69, 23.2 0.94, 20.16 0.62, 20 0.80, 18 0.81 mm against A. terreus, niger, flavus , C. albicans fumigatus respectively, whereas (IZ) 3 22.56 0.30, 21.03 0.49, 0.61, 21 0.66, 0.78 versus terreus respectively. ordering activity increased dose concentration pyridine was increased.