Ink jet ink compositions
First Claim
1. A composition comprising a particulate solid, a non-polar medium and a dispersing agent of the formula (1)
[R—
- X]m-Q
(1)wherein R isi) a C20-200 hydrocarbylene chain linked to a terminal hydroxyl or amine group that reacts to form X, orii) a 300 to 3000 g/mole monosubstituted polyether chain obtained from poly(C3-16-alkylene oxide) with a connecting group of 1 to 15 atoms to link to a terminal hydroxyl or amine group that reacts to form X where the alkylene oxide may be a mixture of C3-16 alkylene oxide and wherein said polyether chain optionally includes up to 5 wt. %, based on the weight of the poly(alkylene oxide), of repeat units from ethylene oxide, oriii) a combination of i) and ii) when m is greater than 1;
oriv) a C1-19 optionally substituted hydrocarbylene with heteroatoms, such as O and N, linked to a hydroxyl or amine that reacts with a carbonyl of Q to form X with a combination of i) or ii) or mixtures thereof, when m is greater than 1;
m is 1-3;
X is O, NG, N or mixtures thereof;
addition of an optionally substituted alkyl (meth)acrylate or (meth)acrylamide with X when it is an amine; and
Q is derived from a compound of 2 to 24 carbon atoms containing at least 2 or more carboxylic acids or derivatives thereof, such as 1 or more anhydride groups, where the linkage between X and Q is represented by an ester, amide or imide group from coupling the compound of Q through ester, amide or imide forming reactions with X, and Q contains at least one residual, free acidic carboxyl group and can optionally contain heteroatoms, such as O and N, and halogens such as Cl and Br or mixtures thereof, and wherein the particulate solid is a mixed metal oxide pigment that develops its color intensity and hue after firing at elevated temperatures.
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Accused Products
Abstract
The invention provides dispersed inorganic mixed metal oxide pigment compositions utilizing a carboxylic acid, containing dispersant and a mixed metal oxide pigment. The metal oxide pigment is of the type used to color ceramic or glass articles. The dispersant, in addition to at least one carboxylic acid group, comprises at least one 300-3000 g/mole solubilizing chain of repeating units from hydrocarbylene or repeating units from C3 or C4 alkylene ethers or mixtures of said ethers. A milling process using beads is also described to reduce the mixed metal oxide particle size to the desired range. A method of using the mixed metal oxide dispersion to digitally print an image on a ceramic or glass article using the dispersion jetted through a nozzle and firing the colored article is also described.
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Citations
20 Claims
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1. A composition comprising a particulate solid, a non-polar medium and a dispersing agent of the formula (1)
[R—- X]m-Q
(1)wherein R is i) a C20-200 hydrocarbylene chain linked to a terminal hydroxyl or amine group that reacts to form X, or ii) a 300 to 3000 g/mole monosubstituted polyether chain obtained from poly(C3-16-alkylene oxide) with a connecting group of 1 to 15 atoms to link to a terminal hydroxyl or amine group that reacts to form X where the alkylene oxide may be a mixture of C3-16 alkylene oxide and wherein said polyether chain optionally includes up to 5 wt. %, based on the weight of the poly(alkylene oxide), of repeat units from ethylene oxide, or iii) a combination of i) and ii) when m is greater than 1;
oriv) a C1-19 optionally substituted hydrocarbylene with heteroatoms, such as O and N, linked to a hydroxyl or amine that reacts with a carbonyl of Q to form X with a combination of i) or ii) or mixtures thereof, when m is greater than 1; m is 1-3; X is O, NG, N or mixtures thereof; addition of an optionally substituted alkyl (meth)acrylate or (meth)acrylamide with X when it is an amine; and Q is derived from a compound of 2 to 24 carbon atoms containing at least 2 or more carboxylic acids or derivatives thereof, such as 1 or more anhydride groups, where the linkage between X and Q is represented by an ester, amide or imide group from coupling the compound of Q through ester, amide or imide forming reactions with X, and Q contains at least one residual, free acidic carboxyl group and can optionally contain heteroatoms, such as O and N, and halogens such as Cl and Br or mixtures thereof, and wherein the particulate solid is a mixed metal oxide pigment that develops its color intensity and hue after firing at elevated temperatures. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- X]m-Q
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11. A process for milling an inorganic particulate, having a dry powder volume average particle diameter D50 in excess of 1 micron, in a non-polar solvent to a D50 particle size of less than 600 nanometres, said process comprising;
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a) blending a non-polar organic medium, said inorganic particulate material comprising a mixed metal oxide pigment, optionally including a vitreous glaze material, having a dry powder volume average particle diameter in excess of 1 micron, and a dispersing agent of the formula
[R—
X]m-Q
(1)wherein R is i) a C20-200 hydrocarbylene chain linked to a terminal hydroxyl or amine group that reacts to form X, or ii) a 300 to 3000 g/mole monosubstituted polyether chain obtained from poly(C3-16-alkylene oxide) with a connecting group of 1 to 15 atoms to link to a terminal hydroxyl or amine group that reacts to form X where the alkylene oxide may be a mixture of C3-16 alkylene oxide and wherein said polyether chain optionally includes up to 5 wt. %, based on the weight of the poly(alkylene oxide), of repeat units from ethylene oxide, or iii) a combination of i) and ii) when m is greater than 1;
oriv) a C1-19 optionally substituted hydrocarbylene with heteroatoms, such as O and N, linked to a hydroxyl or amine that reacts with a carbonyl of Q to form X with a combination of i) or ii) or mixtures thereof, when m is greater than 1; m is 1-3; X is O, NG, N or mixtures thereof; G is H or an optionally substituted C1-36 hydrocarbylene group, or is the residue of a Michael addition of an optionally substituted alkyl (meth)acrylate or (meth)acrylamide with X when it is an amine; and Q is derived from a compound of 2 to 24 carbon atoms containing at least 2 or more carboxylic acids or derivatives thereof, such as 1 or more anhydride groups, where the linkage between X and Q is represented by an ester, amide or imide group from coupling the compound of Q through ester, amide or imide forming reactions with X, and Q contains at least one residual, free acidic carboxyl group and can optionally contain heteroatoms, such as O and N, and halogens such as Cl and Br or mixtures thereof; b) milling said mixed metal oxide pigment dispersed with said dispersing agent in said non-polar organic medium using a bead mill for 5 minutes to 60 hours; and c) confirming the volume average particle diameter D50 is less than 600 nanometres. - View Dependent Claims (13)
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12. A process for milling an inorganic particulate, having a dry powder volume average particle diameter D50 in excess of 1 micron, in a non-polar solvent to a D50 particle size of less than 600 nanometres, said process comprising;
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a) blending a non-polar organic medium, said inorganic particulate material comprising a mixed metal oxide pigment, optionally including a vitreous glaze material, having a dry powder volume average particle diameter in excess of 1 micron, and a dispersing agent of the formula
[R—
X]m-Q
(1)wherein R is i) a C20-200 hydrocarbylene chain linked to a terminal hydroxyl or amine group that reacts to form X, or ii) a 300 to 3000 g/mole monosubstituted polyether chain obtained from poly(C3-16-alkylene oxide) with a connecting group of 1 to 15 atoms to link to a terminal hydroxyl or amine group that reacts to form X where the alkylene oxide may be a mixture of C3-16 alkylene oxide and wherein said polyether chain optionally includes up to 5 wt. %, based on the weight of the poly(alkylene oxide), of repeat units from ethylene oxide, or iii) a combination of i) and ii) when m is greater than 1;
oriv) a C1-19 optionally substituted hydrocarbylene with heteroatoms, such as O and N, linked to a hydroxyl or amine that reacts with a carbonyl of Q to form X with a combination of i) or ii) or mixtures thereof, when m is greater than 1; m is 1-3; X is O, NG, N or mixtures thereof; G is H or an optionally substituted C1-36 hydrocarbylene group, or is the residue of a Michael addition of an optionally substituted alkyl (meth)acrylate or (meth)acrylamide with X when it is an amine; and Q is derived from a compound of 2 to 24 carbon atoms containing at least 2 or more carboxylic acids or derivatives thereof, such as 1 or more anhydride groups, where the linkage between X and Q is represented by an ester, amide or imide group from coupling the compound of Q through ester, amide or imide forming reactions with X, and Q contains at least one residual, free acidic carboxyl group and can optionally contain heteroatoms, such as O and N, and halogens such as Cl and Br or mixtures thereof; b) milling said mixed metal oxide pigment dispersed with said dispersing agent in said non-polar organic medium using a bead mill at a milling rate of 0.4 to 8 KWatt/hour per Kg of particulate; and c) confirming the volume average particle diameter D50 so is less than 600 nanometres. - View Dependent Claims (20)
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14. A process for digitally printing on ceramic article or glass article substrate using an ink jetted through a nozzle,
a) providing a mixed metal oxide dispersed in a non-polar organic medium with a dispersing agent of the formula
[R—- X]m-Q
(1)wherein R is i) a C20-200 hydrocarbylene chain linked to a terminal hydroxyl or amine group that reacts to form X, or ii) a 300 to 3000 g/mole monosubstituted polyether chain obtained from poly(C3-16-alkylene oxide) with a connecting group of 1 to 15 atoms to link to a terminal hydroxyl or amine group that reacts to form X where the alkylene oxide may be a mixture of C3-16 alkylene oxide and wherein said polyether chain optionally includes up to 5 wt. %, based on the weight of the poly(alkylene oxide), of repeat units from ethylene oxide, or iii) a combination of i) and ii) when m is greater than 1;
oriv) a C1-19 optionally substituted hydrocarbylene with heteroatoms, such as O and N, linked to a hydroxyl or amine that reacts with a carbonyl of Q to form X with a combination of i) or ii) or mixtures thereof, when m is greater than 1; m is 1-3; X is O, NG, N or mixtures thereof; G is H or an optionally substituted C1-36 hydrocarbylene group, or is the residue of a Michael addition of an optionally substituted alkyl (meth)acrylate or (meth)acrylamide with X when it is an amine; and Q is derived from a compound of 2 to 24 carbon atoms containing at least 2 or more carboxylic acids or derivatives thereof, such as 1 or more anhydride groups, where the linkage between X and Q is represented by an ester, amide or imide group from coupling the compound of Q through ester, amide or imide forming reactions with X, and Q contains at least one residual, free acidic carboxyl group and can optionally contain heteroatoms, such as O and N, and halogens such as Cl and Br or mixtures thereof; b) jetting said mixed metal oxide dispersed in said non-polar organic medium using said dispersing agent onto said substrate, optionally where said substrate has had one or more layers of glaze applied thereon, to form a pigmented digital image on said substrate wherein said image develops into a colored image upon firing said ceramic substrate or heating said glass substrate to provide tempering or annealing; c) optionally applying a glaze over said digital image; and d) heating said ceramic article at an elevated temperature or heating said glass article to anneal or temper it, wherein said image from metal oxide develops optimal color intensity upon heating to its color. - View Dependent Claims (15, 16, 17, 18, 19)
- X]m-Q
Specification