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Performance polymers Polyplasdone™ and Polyclar™
Vinylpyrrolidone copolymers
Polyvinylpolypyrrolidone
The copolymers of vinylpyrrolidone and a number of other vinyl monomers are described on the following pages. These products are used in applications that benefit from the unique characteristics of the pendant pyrrolidone ring in combination with the properties of the comonomers’ functionalities.
Polyplasdone, Polyclar and ViviPrint PS-10 polyvinylpolypyrrolidone (PVPP) are cross-linked homopolymers of vinylpyrrolidone (VP). These PVPPs are water-insoluble solids but retain many of the functional properties of polyvinylpyrrolidone (PVP). Many of the properties of PVPP are related to the unique pseudo cationic (zwitterionic) chemistry of pyrrolidone and effectively chemical complex phenolic and aromatic compounds via hydrogen bonding and dipole interaction and adsorb a variety of materials including dyes, printing inks, aromatic species (e.g., polyphenols) and colors in wine. They have high capillary activity and hydration capacity. Surface area typically ranges 1 to 1.5 m2/g. Product grades range in particle size from < 30 µm to > 200 µm. Smaller particle size grades (< 30 µm) can be used in digital printing applications with microporous silica as ink-receptive coatings to enhance drying of printed images, minimize impact on coating gloss, improve ease of formulation dispersion and reduce color variation and water resistance of printed images.
