Radiation curable fluids

Patent metadata

Field	Value
Publication number	US-9453135-B2
Application number	US-201314413262-A
Country	US
Kind code	B2
Filing date	Jun 17, 2013
Priority date	Jul 10, 2012
Publication date	Sep 27, 2016
Grant date	Sep 27, 2016

Abstract

A radiation curable fluid includes a vinylether (meth)acrylate monomer, a compound including a sulfonic acid group, and a polymeric dispersant including heterocyclic groups having hetero atoms consisting of one or two nitrogen atoms.

First claim

The invention claimed is:

1. A radiation curable fluid comprising:
a vinylether (meth)acrylate monomer;
a compound including a sulfonic acid group; and
a polymeric dispersant including heterocyclic groups including hetero atoms consisting of one or two nitrogen atoms; wherein
an amine value of the polymeric dispersant is at least 30 mg KOH/g;
the heterocyclic groups including the hetero atoms consisting of the one or two nitrogen atoms include pyridine groups;
the polymeric dispersant is a copolymer of vinyl-2-pyridine or vinyl-4-pyridine; and
the polymeric dispersant includes an acrylate co-monomer.

2. The radiation curable fluid according to claim 1 , wherein the compound including the sulfonic acid group includes a colour pigment.

3. The radiation curable fluid according to claim 2 , wherein the colour pigment is C.I. Pigment Blue 15:4.

4. The radiation curable fluid according to claim 2 , wherein the colour pigment is a colour pigment including a sulfonated pigment surface selected from the group consisting of C.I. Pigment Violet 23 and C.I. Pigment Red 57:1.

5. The radiation curable fluid according to claim 1 , further comprising 0 wt % to 3 wt % of organic solvent.

6. A radiation curable inkjet ink including the radiation curable fluid according to claim 1 .

7. An inkjet printing method including the steps of: feeding an inkjet print head with a radiation curable inkjet ink including:
a vinylether (meth)acrylate monomer;
a compound including a sulfonic acid group; and
a polymeric dispersant including heterocyclic groups including hetero atoms consisting of one or two nitrogen atoms; wherein
an amine value of the polymeric dispersant is at least 30 mg KOH/g;
the heterocyclic groups including the hetero atoms consisting of the one or two nitrogen atoms include pyridine groups;
the polymeric dispersant is a copolymer of vinyl-2-pyridine or vinyl-4-pyridine; and the polymeric dispersant includes an acrylate co-monomer; and jetting the radiation curable inkjet ink onto a substrate.

8. The inkjet printing method according to claim 7 , wherein the substrate is an opaque white substrate.

Assignees

• Agfa Graphics Nv

Inventors

• André Xavier

Classifications

• C09D11/40 Primary

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

• C09D11/326

  characterised by the pigment dispersant · CPC title

• C09D11/107 Primary

  from unsaturated acids or derivatives thereof · CPC title

• C09D11/322

  Pigment inks · CPC title

• C09D11/101

  Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing · CPC title