Colored resin particle dispersion and inkjet ink

Patent metadata

Field	Value
Publication number	US-10040958-B2
Application number	US-201514597942-A
Country	US
Kind code	B2
Filing date	Jan 15, 2015
Priority date	Jan 16, 2014
Publication date	Aug 7, 2018
Grant date	Aug 7, 2018

Abstract

A colored resin particle dispersion and an ink are provided which yield excellent abrasion resistance for printed items. Moreover, a colored resin particle dispersion and an inkjet ink are provided which exhibit excellent abrasion resistance, water resistance and marker resistance, as well as favorable storage stability. Specifically provided are a colored resin particle dispersion containing colored resin particles, a basic dispersant, and a non-aqueous solvent, wherein the colored resin particles include a colorant and a crosslinked solid resin, and an inkjet ink containing this colored resin particle dispersion.

First claim

The invention claimed is:

1. A colored resin particle dispersion comprising colored resin particles, a basic dispersant, and a non-aqueous solvent,
wherein the colored resin particles comprise a colorant and a crosslinked solid resin,
the crosslinked solid resin is a resin obtained by crosslinking a reactive solid resin using a crosslinking agent, and
the reactive solid resin comprises at least one selected from the group consisting of a nitrocellulose, a polyamide resin having an alkoxy group, a polyvinyl acetal resin, and a polyvinyl alcohol.

2. The colored resin particle dispersion according to claim 1 , wherein the reactive solid resin comprises at least one of a carboxyl group, a hydroxyl group and an amide linkage.

3. The colored resin particle dispersion according to claim 2 , wherein the reactive solid resin comprises the carboxyl group.

4. The colored resin particle dispersion according to claim 2 , wherein the reactive solid resin comprises the hydroxyl group.

5. The colored resin particle dispersion according to claim 2 , wherein the reactive solid resin comprises the amide linkage.

6. The colored resin particle dispersion according to claim 1 , wherein the reactive solid resin comprises the nitrocellulose.

7. The colored resin particle dispersion according to claim 1 , wherein the reactive solid resin comprises the polyamide resin having an alkoxy group.

8. The colored resin particle dispersion according to claim 1 , wherein the reactive solid resin comprises the polyvinyl acetal resin.

9. The colored resin particle dispersion according to claim 1 , wherein the reactive solid resin comprises the polyvinyl alcohol.

10. The colored resin particle dispersion according to claim 1 , wherein the colored resin particles further comprise a liquid organic compound having an acidic group.

11. The colored resin particle dispersion according to claim 10 , wherein the acidic group of the liquid organic compound having an acidic group comprises a phosphoric acid group.

12. The colored resin particle dispersion according to claim 1 , wherein the colored resin particle dispersion is an inkjet ink.

13. A colored resin particle dispersion comprising colored resin particles, a basic dispersant, and a non-aqueous solvent, wherein the colored resin particles comprise a colorant, a crosslinked solid resin, and a liquid organic compound having an acidic group, and
the acidic group of the liquid organic compound having an acidic group comprises a phosphoric acid group.

14. The colored resin particle dispersion according to claim 1 ,
wherein the reactive solid resin is a solid resin having hydroxyl groups, and
the crosslinking agent is at least one of metal chelate-based compounds, and isocyanate-based compounds.

15. The colored resin particle dispersion according to claim 1 , wherein the crosslinking agent comprises at least one of carbodiimide-based compounds, aziridine-based compounds, metal chelate-based compounds, isocyanate-based compounds, epoxy-based compounds, oxazoline-based compounds, urea-based compounds, polyamine-based compounds, polyethyleneimine-based compounds, and acrylamide-based compounds.

Assignees

• Riso Kagaku Corp

Inventors

• Ando Kazuyuki
• Watanabe Yoshifumi
• Shimizu Manami

Classifications

• C09D11/30 Primary

  Inkjet printing inks · CPC title

• C09D177/00

  Coating compositions based on polyamides obtained by reactions forming a carboxylic amide link in the main chain (based on polyhydrazides C09D179/06; based on polyamide-imides C09D179/08); Coating compositions based on derivatives of such polymers · CPC title

• C09B67/0061

  by grinding a dyed resin · CPC title

• C09D133/00

  Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers · CPC title

• C09D11/32

  characterised by colouring agents · CPC title