A Study on Polymer Coated Colour Pigments for Water-Based Ink

Autor: T. K N. Hoang, P. A. Tuan, R. Finsy, L. Deriemaeker
Jazyk: angličtina
Rok vydání: 2008
Předmět:
DOI: 10.5281/zenodo.1081910
Popis: The pigments covered by film-forming polymers have opened a prospect to improve the quality of water-based printing inks. In this study such pigments were prepared by the initiated polymerization of styrene and methacrylate derivative monomers in the aqueous pigment dispersions. The formation of polymer films covering pigment cores depends on the polymerization time and the ratio of pigment to monomers. At the time of 4 hours and the ratio of 1/10 almost pigment particles are coated by the polymer. The formed polymer covers of pigments have the average thickness of 5.95 nm. The size increasing percentage of the coated particles after a week is 4.5 %, about fourteen-fold lower than of the original ones. The obtained results indicate that the coated pigments are improved dispersion stability in water medium along with a guarantee for the optical colour.
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Databáze: OpenAIRE
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