Colored resin particle dispersion, ink, ink set, and inkjet printing method

Patent metadata

Field	Value
Publication number	US-12049569-B2
Application number	US-202117378762-A
Country	US
Kind code	B2
Filing date	Jul 18, 2021
Priority date	Feb 28, 2019
Publication date	Jul 30, 2024
Grant date	Jul 30, 2024

Abstract

A colored resin particle dispersion containing colored resin particles and water, in which the colored resin particles contain an oil-soluble dye and a polymer P containing a structural unit represented by Formula (1), a structural unit represented by Formula (2), and a hydrophilic group, an ink, an ink set, and an inkjet printing method. L1 represents a chain hydrocarbon group having 4 to 10 carbon atoms, two *1's each represent a bonding position, L2 represents a chain hydrocarbon group having 2 to 25 carbon atoms which may contain an oxygen atom or the like, or a polymer chain having a number-average molecular weight of 500 or greater, Y1 and Y2 each independently represent —O—, —S—, or, —NRz-, Rz represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, and two *2's each represent a bonding position.

First claim

What is claimed is:

1. A colored resin particle dispersion comprising:
colored resin particles; and
water,
wherein the colored resin particles contain an oil-soluble dye and a polymer P containing a structural unit represented by Formula (1), a structural unit represented by Formula (2), and a hydrophilic group,

in Formula (1),
L 1 represents a chain hydrocarbon group having 4 to 10 carbon atoms, and
two *1's each represent a bonding position, and
in Formula (2),
L 2 represents a chain hydrocarbon group having 2 to 25 carbon atoms which may contain an oxygen atom, a nitrogen atom, or a sulfur atom, or a polymer chain having a number-average molecular weight of 500 or greater which consists of a polyether chain, a polyester chain, a polycaprolactone chain, a polycarbonate chain, a polybutadiene chain, a polyisoprene chain, or a polyolefin chain,
Y 1 and Y 2 each independently represent —O—, —S—, or, —NRz-,
Rz represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, and
two *2's each represent a bonding position.

2. The colored resin particle dispersion according to claim 1 ,
wherein a glass transition temperature of the polymer P is 50° ° C. or lower.

3. The colored resin particle dispersion according to claim 1 ,
wherein L 2 is a chain hydrocarbon group having 4 to 25 carbon atoms and a branched structure which may contain an oxygen atom, a nitrogen atom, or a sulfur atom, or a polymer chain having a number-average molecular weight of 500 or greater which consists of a polycarbonate chain.

4. The colored resin particle dispersion according to claim 3 ,
wherein the chain hydrocarbon group having 4 to 25 carbon atoms and a branched structure which may contain an oxygen atom, a nitrogen atom, or a sulfur atom is an unsubstituted branched alkylene group having 6 to 25 carbon atoms, an alkoxylated branched alkylene group having 6 to 25 carbon atoms, or an alkylcarbonyloxylated branched alkylene group having 6 to 25 carbon atoms, and
the polycarbonate chain contains an alkylene group having 2 to 12 carbon atoms and does not contain a cyclic structure.

5. The colored resin particle dispersion according to claim 1 ,
wherein L 1 is an alkylene group having 6 to 10 carbon atoms.

6. The colored resin particle dispersion according to claim 1 ,
wherein the hydrophilic group is at least one selected from the group consisting of a carboxyl group and a salt of the carboxyl group.

7. The colored resin particle dispersion according to claim 6 ,
wherein in a case where a total number of millimoles of a carboxyl group contained in 1 g of the polymer P and a salt of the carboxyl group is defined as an acid value of the polymer P, the acid value of the polymer P is 0.30 mmol/g to 1.50 mmol/g.

8. The colored resin particle dispersion according to claim 1 ,
wherein a weight-average molecular weight of the polymer P is 8,000 to 30,000.

9. The colored resin particle dispersion according to claim 1 ,
wherein the oil-soluble dye contains at least one selected from the group consisting of a metal complex dye and a disazo dye.

10. The colored resin particle dispersion according to claim 1 ,
wherein the oil-soluble dye contains at least one selected from the group consisting of a chromium complex dye and a disazo dye.

11. The colored resin particle dispersion according to claim 1 ,
wherein the oil-soluble dye contains a chromium complex dye.

12. The colored resin particle dispersion according to claim 1 ,
wherein a mass ratio of a content of the polymer P to a content of the oil-soluble dye is 0.10 to 2.50.

13. The colored resin particle dispersion according to claim 1 ,
wherein a mass ratio of a content of the polymer P to a content of the oil-soluble dye is 0.25 to 1.00.

14. An ink comprising:
the colored resin particle dispersion according to claim 1 .

15. The ink according to claim 14 , which is used as an inkjet ink.

16. The ink according to claim 14 , which is used as a printing ink.

17. An ink set comprising:
two or more types of inks,
wherein at least one of the two or more types of inks is the ink according to claim 14 .

18. An inkjet printing method comprising:
a step of forming an image by applying the ink according to claim 14 to a fabric by an inkjet method; and
a step of heat-treating the image.

19. The colored resin particle dispersion according to claim 1 ,
wherein the polymer P comprises at least one structural unit having a hydrophilic group, and the structural unit having a hydrophilic group is a structural unit represented by the following Formula (3);

wherein, in Formula (3), R X1 represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, A represents an anionic group, and two *3's each represent a bonding position.

20. The colored resin particle dispersion according to claim 1 ,
wherein the structural unit represented by Formula (1) that is contained in the polymer P is a structural unit that is derived from at least one selected from the group consisting of the following compound (1-1), compound (1-2), and compound (1-3).

Assignees

• Fujifilm Corp

Inventors

• Sato Noriaki
• Suzuki Shota
• HAMADA Naoka
• Nakano Ryoichi
• Ikoshi Masao

Classifications

• B41J2/2107

  characterised by the ink properties (supplying ink in a solid state B41J2/17593) · CPC title

• D06P5/30

  Ink jet printing · CPC title

• D06P5/2077

  after dyeing · CPC title

• D06P3/6041

  using specified dyes · CPC title

• D06P1/5285

  Polyurethanes; Polyurea; Polyguanides · CPC title