Aqueous resin based inkjet inks

Patent metadata

Field	Value
Publication number	US-12209182-B2
Application number	US-201917253675-A
Country	US
Kind code	B2
Filing date	Jun 7, 2019
Priority date	Jun 18, 2018
Publication date	Jan 28, 2025
Grant date	Jan 28, 2025

Abstract

An aqueous dispersion of a capsule composed of a polymeric shell surrounding a core, the shell comprising a silanol containing compound or condensation product thereof covalently bonded to the polymer of the shell. The aqueous dispersion can be used in an aqueous inkjet ink composition.

First claim

The invention claimed is:

1. An aqueous dispersion of a capsule comprising a polymeric shell surrounding a core, the core comprising one or more chemical reactants capable of forming a reaction product upon application of heat and/or light, the polymeric shell comprising a polymer and either a silanol containing compound or a condensation product of a silanol containing compound, and wherein the silanol containing compound or the condensation product is covalently bonded to the polymer of the polymeric shell.

2. The aqueous dispersion of claim 1 , wherein the silanol containing compound is an alkoxysilane according to Formula I or the condensation product is derived from an alkoxysilane according to Formula I

wherein
R 1 is a structural moiety comprising a functional group capable of reacting with the shell polymer, and
R 2 is a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group.

3. The aqueous dispersion of claim 2 , wherein the functional group is an amine, a thiol, a hydroxyl group, or an isocyanate.

4. The aqueous dispersion of claim 1 , wherein the one or more chemical reactants is a thermal curing compound.

5. The aqueous dispersion of claim 2 , wherein the one or more chemical reactants is a thermal curing compound.

6. The aqueous dispersion of claim 4 , wherein the thermal curing compound is a blocked isocyanate.

7. The aqueous dispersion of claim 5 , wherein the thermal curing compound is a blocked isocyanate.

8. The aqueous dispersion of claim 1 , wherein the polymeric shell includes a polymer selected from the group consisting of polyureas, polyesters, polycarbonates, polyamides, polyurethanes, melamine based polymers, and mixtures thereof.

9. The aqueous dispersion of claim 2 , wherein the polymeric shell includes a polymer selected from the group consisting of polyureas, polyesters, polycarbonates, polyamides, polyurethanes, melamine based polymers, and mixtures thereof.

10. The aqueous dispersion of claim 1 , wherein a dispersing group is covalently bonded to the polymeric shell and the dispersing group is selected from the group consisting of a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid ester or a salt thereof, a phosphonic acid or a salt thereof, and mixtures thereof.

11. The aqueous dispersion of claim 2 , wherein a dispersing group is covalently bonded to the polymeric shell and the dispersing group is selected from the group consisting of a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid ester or a salt thereof, a phosphonic acid or a salt thereof, and mixtures thereof.

12. An aqueous inkjet ink comprising a pigment and the dispersion of claim 1 .

13. An aqueous inkjet ink comprising a pigment and the dispersion of claim 2 .

14. An aqueous inkjet ink comprising a pigment and the dispersion of claim 11 .

15. An aqueous pre-treatment liquid for textile printing comprising the dispersion of claim 1 and a flocculant.

16. A fluid set for textile printing comprising an aqueous pre-treatment liquid comprising a flocculant and the aqueous inkjet ink of claim 12 .

17. A fluid set for textile printing comprising an aqueous pre-treatment liquid comprising a flocculant and the aqueous inkjet ink of claim 13 .

18. A fluid set for textile printing comprising an aqueous pre-treatment liquid comprising a flocculant and the aqueous inkjet ink as defined of claim 14 .

19. An inkjet printing method including the steps of:
a) jetting the inkjet ink of claim 12 on a substrate to obtain an image; and
b) heating the jetted image to a temperature of about 110° C. to about 200° C.

Assignees

• Agfa Nv

Inventors

• Loccufier Johan
• Decoster Luc

Classifications

• D06P5/30

  Ink jet printing · CPC title

• D06P5/2077

  after dyeing · CPC title

• D06P1/445

  Use of auxiliary substances before, during or after dyeing or printing · CPC title

• C09D11/54

  Inks based on two liquids, one liquid being the ink, the other liquid being a reaction solution, a fixer or a treatment solution for the ink · CPC title

• C09D11/102 Primary

  containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds · CPC title