Synthesis of waterborne acrylic copolymer resin as a binding agent for the development of water-based inks in the printing application

In this study, a new waterborne acrylic copolymer resin (acrylic-co-resin) was synthesized to develop water-based printing inks on polyester (PET) film. The synthesized acrylic resin showed good water solubility, high acid value (120 mg KOH/g), about 57% solid content. The developed water-based inks (cyan, magenta, and yellow) exhibited small particle size (<1 μm) and optimum surface energy within required values (31.5, 32, and 30 mN/m) for good adhesion of ink upon PET films. The developed inks also showed good storage stability for 30 days. Further, to evaluate the application performance, the inks were printed on corona-treated PET films at room temperature, and the ink drying time was measured. Further, the inks were printed on the corona-treated PET film to evaluate the application performance. The developed inks showed a short drying time (7–9 s), which indicates their fast drying nature. Moreover, the developed inks showed good printability, color strength, high adhesion, and excellent rub-resistant properties. Thus, the overall results demonstrated the potential of water-based inks in printing applications.     

Synergistic effect of SiO2 on proton conduction and thermal behavior for nanocomposite electrolyte CsH2PO4 fuel cells

Journal of Materials Science: Materials in Electronics - Solid acid composite electrolytes (1?x)CsH2PO4(CDP)/xSiO2 (0?≤?x?≤?0.35) were prepared and...     

Studies in pyrazines of some roasted cereal flours

Summary Roasted cereal flours of wheat, jowar, and ragi in combination with sugar, jaggery, or salt are used as emergency rations by the masses in India. A number of pyrazines were isolated and characterized by TLC, and UV and IR spectrophotometry. With the help of Dragendorff's reagent these could be detected and estimated down to 2.5 g and 5 g, respectively. In roasted wheat flour 2-methoxy-3methyl-, 2,3-dimethyl-, and 2-ethyl-3-methyl-pyrazines were predominant. In roasted jowar flour 2,3-dimethyl-, 2-ethoxy-3-isopropyl-, and 2-ethyl-5-methyl-pyrazine were maximum; whereas in roasted ragi flour pyrazine and 2-methylthio-3-isopropylpyrazine had the major contribution. The presence of alkylpyrazines in roasted flours could be a major factor contributing towards their aroma.

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Studien über Pyrazine in einigen gerösteten Getreidemehlen

Zusammenfassung Geröstete Getreidemehle aus Weizen, Jowar und Ragi in Kombination mit Zucker, Jaggery oder Salz werden als Notverpflegung des indischen Volkes gebraucht. Eine Zahl von Pyrazinen wurden durch TLC, UV- und IR-Spektrophotometrie isoliert und charakterisiert. Mit Hilfe des Dragendorffreagenses konnten diese nachgewiesen und bis herunter zu 2,5 bzw. 5 gg erfaßt werden. Im gerösteten Weizenmehl waren 2-Methoxy-3-methyl-, 2,3-Dimethyl-und 2-Äthyl-3-methyl-Pyrazine vorherrschend. Im gerösteten Jowarmehl waren 2,3-Dimethyl-, 2-äthoxy-3-isopropyl- und 2-Äthyl-3-methyl-Pyrazine maximal, dagegen in geröstetem Ragimehl waren es Pyrazin und 2-Methylthio-3-isopropyl-Pyrazin. Die Gegenwart von Alkylpyrazinen in gerösteten Mehlen dürfte zu deren Aroma hauptsächlich beitragen.

     

Environment-friendly and cost-effective solution for flexible packaging printing process by advancement in engraving process

Clean Technologies and Environmental Policy - Organic solvents have been commonly used in the printing process for a long time in gravure printing applications. Using organic solvents in...