Aqueous ink-jet inks containing mixtures of anionic and non-ionic polymeric binders
View Patent ↗The present disclosure provides aqueous ink-jet inks having improved salt stability containing an aqueous vehicle, a colorant, and a mixture of a water-borne anionic polymeric binder and a water-borne non-ionic polymeric binder.
1. An aqueous ink-jet ink having improved salt stability comprising an aqueous vehicle, a colorant, and a mixture of a water-borne anionic polymeric binder and a water-borne non-ionic polymeric binder, wherein said anionic polymeric binder is a polyurethane, and said non-ionic polymeric binder is selected from the group consisting of polyurethane, polyethylene-vinylacetate, acrylics, polyamide, polystyrene-acrylate, and mixtures thereof.
2. The ink of claim 1 , wherein said non-ionic polymeric binder is polyurethane.
3. The ink of claim 2 , wherein said anionic polymeric binder is cross-linked with a cross-linking agent.
4. The ink of claim 3 , further comprises a polymeric dispersant.
5. The ink of claim 4 , wherein said polymeric dispersant is polyurethane.
6. The ink of claim 5 , wherein said ink is printed onto textile.
7. The ink of claim 6 , wherein said textile is treated by a pre-treatment fluid.
8. The ink of claim 7 , wherein said ink is under-printed with a white ink.
9. The ink of claim 3 , wherein the ratio of said anionic polymeric binder to said non-ionic polymeric binder is between 1:0.05 and 0.05:1 by weight.
10. The ink of claim 9 , wherein the ratio of said anionic polymeric binder to said non-ionic polymeric binder is between 1:0.1 and 0.1:1 by weight.
11. The ink of claim 1 , wherein said non-ionic polymeric binder is acrylics.
12. The ink of claim 11 , wherein said anionic polymeric binder is cross-linked with a cross-linking agent.
13. The ink of claim 12 , further comprises a polymeric dispersant.
14. The ink of claim 13 , wherein said polymeric dispersant is polyurethane.
15. The ink of claim 14 , wherein said ink is printed onto textile.
16. The ink of claim 15 , wherein said textile is treated by a pre-treatment fluid.
17. The ink of claim 16 , wherein said ink is under-printed with a white ink.
18. The ink of claim 11 , wherein the ratio of said anionic polymeric binder to said non-ionic polymeric binder is 1:0.05 and 0.05:1 by weight.
19. The ink of claim 18 , wherein the ratio of said anionic polymeric binder to said non-ionic polymeric binder is 1:0.1 and 0.1:1 by weight.
20. An aqueous ink-jet ink having improved salt stability comprising an aqueous vehicle, a colorant, and a mixture of a water-borne anionic polymeric binder and a water-borne non-ionic polymeric binder, wherein said anionic polymeric binder is a polyurethane, said non-ionic polymeric binder is selected from the group consisting of polyurethane, polyethylene-vinylacetate, acrylics, polyamide, polystyrene-acrylate, and mixtures thereof, and wherein the ratio of said anionic polymeric binder to said non-ionic polymeric binder is between 1:0.1 and 0.1:1 by weight.
21. An aqueous ink-jet ink having improved salt stability comprising an aqueous vehicle, a colorant, and a mixture of a water-borne anionic polymeric binder and a water-borne non-ionic polymeric binder, wherein said anionic polymeric binder is a polyurethane and is stabilized by anionic moiety only, and said non-ionic polymeric binder is selected from the group consisting of polyurethane, polyethylene-vinylacetate, acrylics, polyamide, polystyrene-acrylate, and mixtures thereof.