Approaches to Cross-linking Unique, Water Soluble Polymers Used in Inkjet Receptive Coatings

摘要

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/H_2SO_4), poly(vinyl caprolactam-co-N-[3-(di-methylamino)propyl] methacrylamide-co-hydroxy ethyl-methacrylate) neutralized with hydrochloric acid (VCL/ DMAPMA/HEMA/HCL), and poly(2-ethyl-2-oxazoline-co-ethyleneimine) (Aquazol~®/PEI). Cross-linking chemistries to be explored will include commercial aziridine, epoxy, and melamine/formaldehyde cross-linking agents.