| abstract |
The present invention relates to UV curable inkjet inks, fluid assemblies and printing systems. An exemplary UV curable ink-jet ink may comprise water, a photoinitiator, 8% by weight to 25% by weight of organic cosolvent and 2% by weight to 20% by weight of water. polyurethane. The polyurethane may comprise a polymeric strand comprising a polymeric backbone having two ends terminating at a first and a second styling pattern. The polymer backbone can be formed of polymerized monomers comprising a diisocyanate and a reactive diol selected from an acrylate-containing diol or a methacrylate-functional diol. The first styling unit may comprise a monoalcohol containing an acrylate function, a monoalcohol containing a methacrylate function, a monoalcohol containing an allyl function, a monoamine containing an allyl function, a monoalcohol containing a styrene function, a monoalcohol containing a function (meth) acrylamide or a monoalcohol containing a methacrylamide function reacted with an isocyanate group of the diisocyanate. The second capping unit may comprise 3- (cyclohexylamino) -1-propanesulfonic acid or 2- (cyclohexylamino) ethanesulfonic acid reacted with an isocyanate group of the diisocyanate. |