Radiation curable inkjet inks

Patent metadata

Field	Value
Publication number	US-12371580-B2
Application number	US-201917265392-A
Country	US
Kind code	B2
Filing date	Aug 7, 2019
Priority date	Aug 10, 2018
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

A radiation curable white inkjet ink including at least 18.5 wt % of white pigment and 0 to 35 wt % of organic solvent, both weight percentages based on the total weight of the radiation curable white inkjet ink and a polymerizable composition containing 0 to 15.0 wt % of one or more polyfunctional polymerizable compounds, and at least 85.0 wt % of one or more monofunctional polymerizable compounds; and a specific polymerizable composition.

First claim

The invention claimed is:

1. A radiation curable white inkjet ink comprising at least about 18.5 wt % of white pigment based on a total weight of the radiation curable white inkjet ink, 0 wt % to about 35 wt % of organic solvent based on the total weight of the radiation curable white inkjet ink, and a polymerizable composition comprising 1.0 wt % to about 15.0 wt % of one or more polyfunctional polymerizable compounds and at least about 85.0 wt % of one or more monofunctional polymerizable compounds based on a weight of the polymerizable composition;
wherein the polymerizable composition comprises less than about 25.0 wt % of methacrylated polymerizable compounds, more than about 50.0 wt % of acrylated polymerizable compounds, and less than about 10.0 wt % N-vinyl caprolactam (NVC); and
wherein the polymerizable composition has an Ink Composition Value (ICV) of 30 or less and the ICV is of Formula (1):

ICV
=

147
×
wt
⁢

%
⁢

(
NVC
)

+

∑

i
=
1

18

⁢

(

10
×
i

-
75

)

×
wt
⁢

%
⁢

(
i
)

∑

i
=
1

18

⁢
wt
⁢

%
⁢

(
i
)

Formula
⁢

(
1
)

wherein
i is an integer from 1 to 18;
wt % (NVC) is the wt % of N-vinyl caprolactam if present based on the weight of the polymerizable composition;
wt % (i) is the wt % of the monofunctional polymerizable compounds and the polyfunctional polymerizable compounds of a group i based on the weight of the polymerizable composition;
polymerizable compounds other than those in the group i are present at 0 wt % to about 20.0 wt % based on the weight of the polymerizable composition;
one or more oligomers are present at 0 wt % to about 15.0 wt % based on the weight of the polymerizable composition;
the monofunctional polymerizable compounds and the polyfunctional polymerizable compounds of group i=1 are selected from the group consisting of diethyleneglycolbutyletheracrylate, 2-ethyl hexyl acrylate, ethoxydiethyleneglycolacrylate, di(ethylene glycol) 2-ethylhexyl ether acrylate, methoxy polyethylene glycol (550) monomethacrylate, lauryl methacrylate, octyl-decylacrylate, n-octylacrylate, 4-hydroxybutylacrylateglycidylether, 2-hydroxyethylmethacrylate acidphosphate, methoxypolyethyleneglycol (350) monomethacrylate, and mixtures thereof;
the monofunctional polymerizable compounds and the polyfunctional polymerizable compounds of group i=2 are selected from the group consisting of isodecyl acrylate, isononyl acrylate, caprolacton-modified-tetrahydrofurfurylacrylate, methoxypolyethyleneglycol (350) monoacrylate, tridecyl acrylate, 2 (2-ethoxyethoxy) ethyl acrylate, isooctyl acrylate, butylacrylate, polycaprolactone acrylate, and mixtures thereof;
the monofunctional polymerizable compounds and the polyfunctional polymerizable compounds of group i=3 are selected from the group consisting of methoxy polyethylene glycol (550) monoacrylate, 2-methoxyethyl acrylate, ethoxylated (4) lauryl acrylate, iso-amylacrylate, methoxy-triethyleneglycolacrylate, ethoxylated (2) hydroxyethyl methacrylate, ethoxylated (30) bisphenol A diacrylate, polyethylene glycol (600) diacrylate, ethoxylated (8) nonylphenolacrylate, isodecylmethacrylate, and mixtures thereof;
the monofunctional polymerizable compounds and the polyfunctional polymerizable compounds of group i=4 are selected from the group consisting of ethoxylated (20) trimethylolpropane triacrylate, 4-hydroxy butyl acrylate, tridecyl methacrylate, polyethylene glycol (600) dimethacrylate, 1H,1H,5Hoctafluoropentylacrylate, ethoxylated (15) trimethylolpropane triacrylate, 2-ethoxyethylmethacrylate, and mixtures thereof;
the monofunctional polymerizable compounds and the polyfunctional polymerizable compounds of group i=5 are selected from the group consisting of lauryl acrylate, caprolacton-modified (6M) neopentylglycolhydroxypivalatediacrylate, ethoxylated (4) nonylphenol acrylate, polyethylene glycol (400) diacrylate, phenoxypolyethyleneglycolacrylate, ethylacrylate, polyethylene glycol (400) dimethacrylate, and mixtures thereof;
the monofunctional polymerizable compounds and the polyfunctional polymerizable compounds of group i=6 are selected from the group consisting of ethoxylated (9) trimethylolpropane triacrylate, isostearylacrylate, tetrahydrofurfuryl acrylate, propoxylated (3) trimethylolpropane triacrylate, hydroxyethyl acrylate, propoxylated (5.5) glyceryl triacrylate, and mixtures thereof;
the monofunctional polymerizable compounds and the polyfunctional polymerizable compounds of group i=7 are selected from the group consisting of 2-ethylhexyl methacrylate, tetraethylene glycol dimethacrylate, ethoxylated (6) trimethylolpropane triacrylate, triethylene glycol dimethacrylate, (2-ethyl-2-methyl-1,3-dioxolan-4-yl)methyl acrylate, 2-hydroxypropyl acrylate, 2-propylheptylacrylate, hexanediol ethoxylated (3) diacrylate, 2,2,2-trifluoroethylacrylate, 2-(((butylamino)carbonyl)oxy)ethylester 2-propenoic acid, ethoxylated (10) bisphenol A dimethacrylate, and mixtures thereof;
the monofunctional polymerizable compounds and the polyfunctio

Assignees

• Agfa Nv

Inventors

• Courtet Vincent
• Lenaerts Jens
• Li Yiru
• Retailleau Matthieu

Classifications

• C09D11/40

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

• C09D11/38

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

• C09D11/324

  containing carbon black · CPC title

• C08K2003/2241

  Titanium dioxide · CPC title

• C08K5/5397

  Phosphine oxides · CPC title