Radiation curable inkjet inks

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 polyfunctional polymerizable compounds of group i=8 are selected from the group consisting of ethoxylated (10) bisphenol A diacrylate, 3-ethyl-3-oxetanylmethacrylate, 2-phenoxyethyl acrylate, ethoxylated (2) bisphenol A dimethacrylate, benzylacrylate, 2-ethylhexyldiglycolacrylate, stearylacrylate, 2-hydroxybutylacrylate, methylacrylate, cyclic trimethylolpropane formal acrylate, ethoxylated (4) phenolacrylate, dicyclopentenylacrylate, dicyclopentenyl-oxyethylacrylate, and mixtures thereof;
• the monofunctional polymerizable compounds and the polyfunctional polymerizable compounds of group i=9 are selected from the group consisting of polyethylene glycol (200) diacrylate, caprolacton-modified (2M) neopentylglycol hydroxypivalatediacrylate, cyclohexylacrylate, 2-hydroxy-3-phenoxypropylacrylate, propoxylated (3) glyceryl triacrylate, dimethylaminoethylmethacrylate, 1,4-cyclohexanedimethanolmonoacrylate, ethoxylated (3) trimethylolpropane triacrylate, diethylaminoethylmethacrylate, n-butyl methacrylate, and mixtures thereof;
• the monofunctional polymerizable compounds and the polyfunctional polymerizable compounds of group i=10 are selected from the group consisting of propoxylated (6) trimethylolpropane triacrylate, cyclohexanespriro-2-(1,3-dioxolane-4-yl))methylacrylate, tetraethylene glycol diacrylate, 2-hydroxypropylmethacrylate, trimethylolpropane trimethacrylate, isophorylacrylate, 1,6 hexanediol dimethacrylate, and mixtures thereof;
• the monofunctional polymerizable compounds and the polyfunctional polymerizable compounds of group i=11 are selected from the group consisting of propoxylated neopentyl glycol diacrylate, (Octahydro-4,7-methano-1H-indenyl)methyl acrylate, 1H,1H,5H-octafluoropentylmethacrylate, stearyl methacrylate, tetrahydrofurfuryl methacrylate, and mixtures thereof;
• the monofunctional polymerizable compounds and the polyfunctional polymerizable compounds of group i=12 are selected from the group consisting of glycidyl methacrylate, 3,3,5-trimethylcyclohexanolmethacrylate, 1,6 hexanediol diacrylate, 1,4-butanediol diacrylate, dicyclopentenyl-oxyethylmethacrylate, 4-tert.butylcyclohexylacrylate, ethoxylated (2) neopentylglycoldiacrylate, isobutylmethacrylate, 3-methyl-1,5-pentanedioldiacrylate, and mixtures thereof;
• the monofunctional polymerizable compounds and the polyfunctional polymerizable compounds of group i=13 are selected from the group consisting of allylmethacrylate, 2-phenoxyethyl methacrylate, ethoxylated (6) bisphenol A dimethacrylate, benzylmethacrylate, 1,4-butanediol dimethacrylate, tertiarybutylacrylate, 2-hydroxyethyl methacrylate, 2-(2-vinyloxyethoxy) ethyl acrylate, ethoxylated (4) bisphenol A diacrylate, and mixtures thereof;
• the monofunctional polymerizable compounds and the polyfunctional polymerizable compounds of group i=14 are selected from the group consisting of tris (2-hydroxy ethyl) isocyanurate triacrylate, tripropylene glycol diacrylate, trimethylolpropane triacrylate, ethylmethacrylate, diethylene glycol dimethacrylate, dicyclopentadienyl acrylate, ethoxylated (3) bisphenol A diacrylate, ethoxylated (4) pentaerythritol tetraacrylate, and mixtures thereof;
• the monofunctional polymerizable compounds and the polyfunctional polymerizable compounds of group i=15 are selected from the group consisting of di-acetonacrylamide, dioxaneglycoldiacrylate, ethoxylated (4) nonyl phenol methacrylate, and mixtures thereof;
• the monofunctional polymerizable compounds and the polyfunctional polymerizable compounds of group i=16 are selected from the group consisting of 2,2,2-trifluoroethylmetacrylate, cyclohexylmethacrylate, dipentaerythritol pentaacrylate, and mixtures thereof;
• the monofunctional polymerizable compounds and the polyfunctional polymerizable compounds of group i=17 are selected from the group consisting of 1,10-decanedioldiacrylate, isobornyl acrylate, di-trimethylolpropane tetraacrylate, diethylene glycol diacrylate, and mixtures thereof;
• and
• the monofunctional polymerizable compounds and the polyfunctional polymerizable compounds of group i=18 are selected from the group consisting of 1,3-butylene glycol diacrylate, pentaerythritol tetraacrylate, pentaerythritol triacrylate, dipropylene glycol diacrylate, methylmethacrylate, neopentyl glycol diacrylate, tertiarybutylmethacrylate, ethoxylated (4) bisphenol-A-dimethacrylate, isobornyl methacrylate, acryloyl morpholine, dicyclopentanyl acrylate, dihydrocyclopentadienylacrylate, and mixtures thereof.