Textile printing

Patent metadata

Field	Value
Publication number	US-11332633-B2
Application number	US-201816769967-A
Country	US
Kind code	B2
Filing date	Apr 16, 2018
Priority date	Apr 16, 2018
Publication date	May 17, 2022
Grant date	May 17, 2022

Abstract

A method of textile printing can include ejecting an ink composition onto a fabric substrate and ejecting a blocked polyisocyanate crosslinker onto the fabric substrate. The ink composition can include from 60 wt % to 90 wt % water, from 5 wt % to 30 wt % organic co-solvent, from 1 wt % to 6 wt % pigment, and from 2 wt % to 10 wt % dispersed polymer binder. The method can also include crosslinking the dispersed polymer binder with a deblocked polyisocyanate crosslinker on the fabric substrate.

First claim

What is claimed is:

1. A method of textile printing, comprising:
ejecting an ink composition onto a fabric substrate, the ink composition comprising from 60 wt % to 90 wt % water, from 5 wt % to 30 wt % organic co-solvent, from 1 wt% to 6 wt % pigment, and from 2 wt % to 10 wt % dispersed polymer binder, wherein the ink composition does not include a blocked polyisocyanate crosslinker;
ejecting a crosslinker composition that is separate from the ink composition, wherein the crosslinker composition comprises a blocked polyisocyanate crosslinker, onto the fabric substrate;
deblocking the blocked polyisocyanate: crosslinker; and
crosslinking the dispersed polymer binder with the deblocked polyisocyanate crosslinker on the fabric substrate.

2. The method of textile printing of claim 1 , wherein the crosslinker composition is ejected onto the fabric substrate in an amount such that the weight ratio of the blocked polyisocyanate crosslinker ejected onto the fabric substrate to dispersed polymer binder ejected onto the fabric substrate is from 1:100 to 1:12.

3. The method of textile printing of claim 1 , wherein the crosslinker composition comprises from 70 wt % to 94.5 water, from 5 wt % to 25 wt % organic co-solvent, and from 0.5 wt % to 10 wt % blocked polyisocyanate crosslinker.

4. The method of textile printing of claim 1 , wherein the deblocked polyisocyanate crosslinker is generated by applying heat to the blocked polyisocyanate crosslinker on the fabric substrate.

5. The method of textile printing of claim 1 , wherein the blocked polyisocyanate crosslinker includes a blocked polyisocyanate trimer.

6. The method of textile printing of claim 5 , wherein the blocked polyisocyanate trimer has the structure:
(NCO) 3 R 3 (NHCO) 3 (BL) 3-X (DL) X

where R is independently includes a C2 to C10 branched or straight-chained alkyl, C6 to C20 alicyclic, C6 to C20 aromatic, or a combination thereof; and BL includes a phenol blocking group, a lactam blocking group, an oxime blocking group, a pyrazole blocking group, or a combination thereof; x is from greater than 0 to 1; and UL includes a hydrophilic dispersing group.

7. The method of textile printing of claim 6 , wherein R is C4 to C8 alkyl and BL is a dimethyl pyrazole.

8. The method of textile printing of claim 1 , wherein the dispersed polymer binder has an average particle size from 20 nm to 500 nm, and includes an acrylic latex polymer, a styrene acrylic latex polymer, a polyester-polyurethane polymer, or a mixture thereof.

9. A textile printing system, comprising:
a fabric substrate; and
an ink composition, comprising:
from 1 wt % to 6 wt % pigment, and
from 2 wt % to 24 wt % dispersed polymer binder, wherein the ink composition does not include a blocked polyisocyanate crosslinker; and

a crosslinker composition, comprising:
from 70 wt % to 94.5 water,
from 5 wt % to 25 wt % organic co-solvent, and
from 0.5 wt % to 10 wt % blocked polyisocyanate crosslinker.

10. The textile printing system of claim 9 , wherein the blocked polyisocyanate crosslinker includes a blocked polyisocyanate trimer.

11. The textile printing system of claim 10 , wherein the blocked polyisocyanate trimer has the structure:
(NCO) 3 R 3 (NHCO) 3 (BL) 3-X (DL) X

where R is independently includes a C2 to C10 branched or straight-chained alkyl, C6 to C20 alicyclic, C6 to C20 aromatic, or a combination thereof; and BL includes a phenol blocking group, a lactam blocking group, an oxime blocking group, a pyrazole blocking group, or a combination thereof; x is from greater than 0 to 1; and DL includes a hydrophilic dispersing group.

12. The textile printing system of claim 11 , wherein R is C4 to C8 alkyl and BL is a dimethyl pyrazole.

13. The textile printing system of claim 9 , wherein the blocked polyisocyanate crosslinker is present in the crosslinker composition at from 1.5 wt % to 4 wt %.

14. The textile printing system of claim 9 , wherein the dispersed polymer binder has an average particle size from 20 nm to 500 nm, and includes an acrylic latex polymer, a styrene acrylic latex polymer, a polyester-polyurethane polymer, or a mixture thereof.

15. The method of textile printing of claim 1 , wherein the crosslinker composition is colorless.

16. The method of textile printing of claim 1 , wherein the crosslinker composition does not include a polymer binder.

17. The textile printing system of claim 9 , wherein the crosslinker composition is colorless.

18. The textile printing system of claim 9 , wherein the crosslinker composition does not include a polymer binder.

Assignees

• Hewlett Packard Development Co

Inventors

• Guo Dennis Z
• Zheng Jie

Classifications

• C09D11/54 Primary

  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

• C09D11/322

  Pigment inks · CPC title

• B41M5/0023

  Digital printing methods characterised by the inks used (inks per se C09D11/00) · CPC title

• D06P1/5221

  Polymers of unsaturated hydrocarbons, e.g. polystyrene polyalkylene · CPC title

• D06P1/44

  using insoluble pigments or auxiliary substances, e.g. binders · CPC title