Aqueous pigment inkjet ink

Patent metadata

Field	Value
Publication number	US-2020369902-A1
Application number	US-201816766305-A
Country	US
Kind code	A1
Filing date	Nov 26, 2018
Priority date	Nov 30, 2017
Publication date	Nov 26, 2020
Grant date	—

Abstract

The aqueous pigment dispersion can be used in an aqueous inkjet ink which is useful for printing on textile fabrics.

First claim

1 - 11 . (canceled)

12 . An aqueous pigment dispersion comprising:
a pigment; and at least one dispersing agent having the formula I:

wherein
R 1 is selected from the group consisting of a hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted alkaryl group, and a substituted or unsubstituted (hetero)aryl group;
L represents a divalent linking group including 2 to 10 carbon atoms;
R 2 , R 3 , and R 4 are independently selected from the group consisting of a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted alkaryl group, and a substituted or unsubstituted (hetero)aryl group;
any of R 1 , R 2 , R 3 , R 4 , and L may represent atoms necessary to form a five to eight membered ring;
R 5 represents a hydrocarbon group including at least 8 carbon atoms; and
X − represents an anion to compensate for a positive charge of the ammonium group.

13 . The aqueous pigment dispersion according to claim 12 , wherein R 5 represents a substituted or unsubstituted alkyl group including at least 8 carbon atoms.

14 . The aqueous pigment dispersion according to claim 12 , wherein the pigment is selected from the group consisting of a quinacridone and a diketo-pyrolo-pyrrolo-pigment.

15 . The aqueous pigment dispersion according to claim 13 , wherein the pigment is selected from the group consisting of a quinacridone and a diketo-pyrolo-pyrrolo-pigment.

16 . The aqueous pigment dispersion according to claim 12 , wherein the pigment is selected from the group consisting of Pigment Orange 48, Pigment Orange 49, Pigment Red 122, Pigment Red 192, Pigment Red 202, Pigment Red 206, Pigment Red 207, Pigment Red 209, Pigment Violet 19, and Pigment Violet 42.

17 . The aqueous pigment dispersion according to claim 13 , wherein the pigment is selected from the group consisting of Pigment Orange 48, Pigment Orange 49, Pigment Red 122, Pigment Red 192, Pigment Red 202, Pigment Red 206, Pigment Red 207, Pigment Red 209, Pigment Violet 19, and Pigment Violet 42.

18 . An aqueous inkjet ink comprising:
the aqueous pigment dispersion according to claim 12 .

19 . An aqueous inkjet ink comprising:
the aqueous pigment dispersion according to claim 14 .

20 . The aqueous inkjet ink according to claim 18 , wherein the aqueous pigment dispersion is present in an amount from 0.1 wt % to 30 wt %.

21 . The aqueous inkjet ink according to claim 19 , wherein the aqueous pigment dispersion is present in an amount from 0.1 wt % to 30 wt %.

22 . The aqueous inkjet ink according to claim 18 , further comprising:
a resin or a capsule including a shell surrounding a core; wherein the shell includes cationic dispersing groups and the core includes a chemical reactant which is capable of forming a reaction product upon application of heat and/or light.

23 . The aqueous inkjet ink according to claim 19 , further comprising:
a resin or a capsule including a shell surrounding a core; wherein the shell includes cationic dispersing groups and the core includes a chemical reactant which is capable of forming a reaction product upon application of heat and/or light.

24 . The aqueous inkjet ink according to claim 22 , wherein the resin is a polyurethane resin obtainable by reacting a polyester polyol, a polyol containing a quaternary N-atom or an amino group, and a polyisocyanate.

25 . The aqueous inkjet ink according to claim 23 , wherein the resin is a polyurethane resin obtainable by reacting a polyester polyol, a polyol containing a quaternary N-atom or an amino group, and a polyisocyanate.

26 . The aqueous inkjet ink according to claim 24 , wherein the polyester polyol is obtained by reacting an aromatic polycarboxylic acid and a polyol.

27 . The aqueous inkjet ink according to claim 22 , wherein the chemical reactant is a thermally reactive crosslinker.

28 . The aqueous inkjet ink according to claim 23 , wherein the chemical reactant is a thermally reactive crosslinker.

29 . An inkjet recording method comprising:
providing a substrate; printing an image by jetting the aqueous ink jet ink according to claim 18 on a surface of the substrate; and drying the image jetted onto the surface of the substrate.

30 . The inkjet recording method according to claim 29 , further comprising:
heating the image jetted and dried on the substrate to a temperature of at least 110° C.

Assignees

• Agfa Nv

Inventors

• Loccufier Johan
• Van Aert Hubertus
• Decoster Luc

Classifications

• B41J2/2107

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

• C09D11/326 Primary

  characterised by the pigment dispersant · CPC title

• C09D11/38 Primary

  characterised by non-macromolecular additives other than solvents, pigments or dyes · CPC title

• B41M5/0023

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

• C09D11/102

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