Aqueous inkjet inks containing a water-insoluble additive

Patent metadata

Field	Value
Publication number	US-11499065-B2
Application number	US-201716310936-A
Country	US
Kind code	B2
Filing date	Jun 23, 2017
Priority date	Jun 24, 2016
Publication date	Nov 15, 2022
Grant date	Nov 15, 2022

Abstract

The present disclosure pertains to an aqueous inkjet ink containing a pigment as colorant, a polymeric dispersant, a polymeric binder, and a water-insoluble additive. The inks show improved properties for printing on paper and textile.

First claim

The invention claimed is:

1. An aqueous inkjet ink comprising an aqueous vehicle, a pigment, a polymeric dispersant, a polymeric binder and a water insoluble additive, wherein said polymeric dispersant and said polymeric binder are different polymers, and said additive is dispersed by said polymeric dispersant and said polymeric binder, has a solubility in water of less than 5 grams in 100 grams of water, and contains one or more molecules having a structure of Formula I:

wherein W 1 is OR 3 or COOH; W 2 is COOH, SO 3 H or NH 2 ; R 1 is C 1 -C 20 linear alkyl, R 2 is C 1 -C 20 linear alkyl, C 3 -C 20 branched alkyl, C 6 -C 40 aryl or C 6 -C 40 substituted aryl, each R 3 is independently H, C 3 -C 20 branched alkyl, C 3 -C 20 substituted branched alkyl or —C(O)CH(CH 3 ) 2 ; each R 4 is independently H, C 1 -C 20 linear alkyl or C 3 -C 20 branched alkyl; and each R 5 is independently H or C 1 -C 20 linear alkyl.

2. The ink of claim 1 , wherein said additive is present at an amount less than 8% by weight based on the total weight of the ink.

3. The ink of claim 1 , wherein said ink is printed on a textile substrate.

4. The ink of claim 3 , wherein said pigment is a white pigment.

5. The ink of claim 3 , wherein said textile substrate contains a polyvalent cation.

6. The ink of claim 1 , wherein said ink is printed on a paper substrate.

7. The ink of claim 6 , wherein said pigment is a cyan pigment.

8. The ink of claim 1 , wherein said dispersant is a polyurethane.

9. The ink of claim 1 , wherein said dispersant is an acrylic polymer.

10. The ink of claim 1 , wherein R 2 is C 1 -C 20 alkyl.

11. The ink of claim 10 , wherein W 1 is OR 3 .

12. The ink of claim 11 , wherein each R 3 is H.

13. The ink of claim 11 , wherein each R 3 is C 3 -C 20 substituted branched alkyl.

14. The ink of claim 13 , wherein each R 3 is —C(O)CH(CH 3 ) 2 .

15. The ink of claim 10 , wherein R 2 is C 3 -C 20 branched alkyl.

16. The ink of claim 15 , wherein R 2 is —CH(CH 3 ) 2 .

17. The ink of claim 16 , wherein W 1 and is OR 3 .

18. The ink of claim 17 , wherein each R 3 is H.

19. The ink of claim 17 , wherein each R 3 is —C(O)CH(CH 3 ) 2 .

Assignees

• Dupont Electronics Inc

Inventors

• Li Xiaoqing
• Wolfe Michael Stephen

Classifications

• D06P1/647

  Nitrogen-containing carboxylic acids or their salts · CPC title

• C08L75/04

  Polyurethanes · CPC title

• D06P1/5285

  Polyurethanes; Polyurea; Polyguanides · CPC title

• D06P1/653

  Nitrogen-free carboxylic acids or their salts {(sulfocarboxylic acids D06P1/626)} · CPC title

• D06P1/65125

  Compounds containing ester groups · CPC title