Ink receptive, water-soluble polymers are commonly used in inkjet coatings and applications. To render these coatings more resistant to water, cross-linking of these materials is often desirable. Several recent developments in the approach to improved water resistance for some unique, water-soluble polymers will be described. Namely, techniques for cross-linking of poly(vinyl pyrrolidone-co-N-[3-(dimethylamino) propyl]methacrylamide) neutralized with sulfuric acid (PVP/DMAPMA/H2SO4), poly(vinyl caprolactam-co-N-[3-(dimethylamino) propyl] methacrylamide-co-hydroxy ethylmethacrylate) neutralized with hydrochloric acid (VCL/DMAPMA/HEMA/HCL), and poly(2-ethyl-2-oxazoline-coethyleneimine) (Aquazol®/PEI). Cross-linking chemistries to be explored will include commercial aziridine, epoxy, and melamine/formaldehyde cross-linking agents.
David K. Hood, Michael A. Tallon, Raymond Bret Clark, Edward J. Johnson, Jim DiBattista, "Approaches to Cross-linking Unique, Water Soluble Polymers Used in Inkjet Receptive Coatings" in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP20), 2004, pp 780 - 783, https://doi.org/10.2352/ISSN.2169-4451.2004.20.1.art00056_2