AQUEOUS INKJET INK CONTAINING POLYMERIC BINDERS
The present disclosure provides an ink for inkjet printing on offset media. The inkjet ink comprises a dispersed binder. The binder is present at a concentration of greater than 3% by weight.
1 . An inkjet ink for printing on a coated media substrate, said inkjet ink comprising a colorant, an aqueous vehicle, a polymeric binder, and a non-ionic surfactant, wherein said binder is dispersed in the aqueous vehicle and is present at an amount of greater than 3% by weight based on the weight of the ink.
2 . The ink of claim 1 , wherein said binder is a polyurethane.
3 . The ink of claim 2 , wherein said polyurethane is cross-linked.
4 . The ink of claim 1 , wherein said binder is acrylics.
5 . The ink of claim 1 , wherein said binder is neutralized by an amine.
6 . The ink of claim 1 , wherein said colorant is an organic pigment.
7 . The ink of claim 1 , wherein said colorant is a self-dispersing pigment.
8 . The ink of claim 1 , wherein said colorant is dispersed by a polymeric dispersant.
9 . The ink of claim 1 , wherein said ink further comprises a co-solvent at an amount of greater than 25% based the total weight of the ink.
10 . The ink of claim 9 , wherein said ink further comprises a co-solvent at an amount of greater than 30% based the total weight of the ink.
11 . The ink of claim 1 , wherein said non-ionic surfactant has an HLB value of 8 or lower.
12 . The ink of claim 11 , wherein said non-ionic surfactant has an HLB value of 4 or lower.
13 . The ink of claim 1 , wherein said ink has a surface tension of between 18 and 35 dyne/cm.
14 . The ink of claim 1 , wherein said ink has a viscosity of between 3 centipoise and 8 centipoise.