Aqueous inkjet printing liquids

Patent metadata

Field	Value
Publication number	US-10619294-B2
Application number	US-201615749166-A
Country	US
Kind code	B2
Filing date	Jul 28, 2016
Priority date	Aug 3, 2015
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

An inkjet printing liquid contains thermally reactive composite resin particles in an aqueous medium, wherein the thermally reactive composite resin particles contain: a) at least one thermal cross-linker; and b) at least one polymeric resin containing functional groups suitable for reacting with the thermal cross-linker.

First claim

The invention claimed is:

1. An inkjet printing liquid comprising:
thermally reactive composite resin particles in an aqueous medium;
wherein the thermally composite resin particles include:
at least one thermal cross-linker including at least one functional group selected from the group consisting of an epoxide, an oxetane, an aziridine, an azetidine, and a blocked isocyanate;
at least one polymeric resin including functional groups that react with the at least one thermal cross-linker;
the at least one polymeric resin is an amphiphilic polymer including:
a hydrophobic segment that is based on styrene based, acrylate based, vinyl ester based, vinyl acetal based, or combinations thereof; and a hydrophilic polymeric segment that includes at least one functional group selected from the group consisting of a sulfonic acid or salt thereof, a carboxylic acid or salt thereof, a —(CH 2 CH 2 O) n —H group wherein n represents an integer from 2 to 25, and a C2 to C12 aliphatic group substituted by hydroxyl groups wherein a carbon to hydroxyl ratio is 2 or less.

2. The inkjet printing liquid according to claim 1 , further comprising at least another polymeric resin including functional groups selected from the group consisting of a hydroxyl group, a primary amine group, a secondary amine group, an amide group, a urethane group, an urea group, a carboxylic acid group or salt thereof, and an epoxide group.

3. The inkjet printing liquid according to claim 1 , further comprising a catalyst selected from the group consisting of a Brönsted acid, a Lewis acid, and a thermal acid generator.

4. The inkjet printing liquid according to claim 2 , further comprising a catalyst selected from the group consisting of a Brönsted acid, a Lewis acid, and a thermal acid generator.

5. The inkjet printing liquid according to claim 1 , further comprising a colorant.

6. The inkjet printing liquid according to claim 5 , wherein the colorant includes a self-dispersible color pigment in the aqueous medium.

7. An inkjet printing ink set comprising:
the inkjet printing liquid according to claim 1 ; and
one or more aqueous color pigmented inkjet inks.

Assignees

• Agfa Nv

Inventors

• Petton Lionel
• Loccufier Johan
• Bertels Ellen

Classifications

• D06P1/5257

  (Meth)acrylic acid · CPC title

• D06P1/54 Primary

  Substances with reactive groups together with crosslinking agents · CPC title

• C09D11/322

  Pigment inks · CPC title

• D06P1/5221

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

• C09D11/40

  Ink-sets specially adapted for multi-colour inkjet printing · CPC title