Application of ir spectroscopy method in studying the composition of ink for offset printing

The main component of the printing ink binder is pine resin rosin. This work examines the composition and properties of metallized paint based on rosin derived from cherry tree resin in order to reduce the percentage of imported components and expand the range of metallized paints. The composition of metallized paint based on rosin from cherry tree resin was studied by IR spectroscopy. A comparative analysis of the infrared spectra of paints based on rosin from cherry tree resin and those made in China, taken for comparison, showed their chemical identity. The stability of the paint was determined using stand-ard methods and was characterized by its drying time on a non-absorbent surface. It was revealed that paint made from al-ternative raw materials has a shorter drying time, which is one of the necessary conditions for the offset printing process. The potential of IR spectroscopy as a method in printing ink production is demonstrated by its efficiency and ability to accurately determine the chemical composition and degree of similarity to reference samples. Using a paint with an identical composition based on cherry tree resin rosin can help address raw material shortages and expand the range of printing inks.

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