Ink jet latex having reactive surfactant stabilization
AssigneeHewlett-Packard Development Company, L.P.
InventorsKent Vincent, Sivapackia Ganapathiappan
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Abstract
Latex particles having a reacttive surfactant covalently bonded to the latex particle surface are provided. The latex particles exhibit shear stability and accurate drop placement on printed media when used in ink jet inks and in high speed ink jet printers. A latex particle is also provided having a reactive surfactant covalently bonded to the surface of the latex particle, where the latex particle has a bulk density from 0.90 g/cm3 to 1.10 g/cm3 and a surface dielectric constant from 2.0 to 3.0. An ink-jet ink is provided that can comprise effective amounts of an ink vehicle, a colorant admixed in the ink vehicle, latex particles dispersed in the ink vehicle, and a reactive surfactant covalently bonded to the surface of the latex particles.
Claims20
An ink-jet ink, comprising effective amounts of:
- a) an aqueous ink vehicle;
- b) a colorant admixed in the ink vehicle;
- c) latex particles dispersed in the ink vehicle, wherein the latex particles comprise a cross linker;
- and
- d) at least one reactive surfactant covalently bonded to the surface of said latex particles, wherein the at least one reactive surfactant is selected from the group consisting of sodium allyloxy hydroxypropyl sulfonate allyl methoxy triethylene glycol ether, sodium methallyl sulfonates, monosodium ethylsulfonate monododecyl maleate, nonyl phenoxy poly (ethyleneoxy) crotanate, nonyl phenoxy poly (ethyleneoxy) fumarate, and mono dodecyl maleate.
A latex particle having at least one reactive surfactant covalently bonded to a surface of said latex particle, said latex particle having a bulk density from 0.90 g/cm3 to 1.10 g/cm3 and a surface dielectric constant from 2.0 to 3.0 at room temperature and wherein the at least one reactive surfactant is selected from the group consisting of sodium allyloxy hydroxypropyl sulfonate, alkenyl-functional nonionic surfmers, allyl methoxy triethylene glycol ether, sodium methallyl sulfonates, monosodium ethylsulfonate monododecyl maleate, nonyl phenoxy poly (ethyleneoxy) crotanate, nonyl phenoxy poly (ethyleneoxy) fumarate, and mono dodecyl maleate.
An ink-jet ink, comprising effective amounts of:
- a) an aqueous ink vehicle having a predetermined liquid density;
- b) a colorant admixed in the ink vehicle;
- c) latex particles dispersed in the ink vehicle, said latex particles having a bulk density from the same as the liquid density to 0.1 g/cm3 less than to 0.1 g/cm3 greater than the liquid density;
- and
- d) at least one reactive surfactant covalently bonded to the surface of said latex particles, wherein the at least one reactive surfactant is selected from the group consisting of sodium allyloxy hydroxypropyl sulfonate, alkenyl-functional nonionic surfmers allyl methoxy triethylene glycol ether, sodium methallyl sulfonates, monosodium ethylsulfonate monododecyl maleate, nonyl phenoxy poly (ethyleneoxy) crotanate, nonyl phenoxy poly (ethyleneoxy) fumarate, and mono dodecyl maleate.
An ink-jet ink. comprising effective amounts of:
- a) an aqueous ink vehicle;
- b) a colorant admixed in the ink vehicle;
- c) latex particles dispersed in the ink vehicle, wherein said latex particles have a surface dielectric constant from about 2.0 to about 3.0 at room temperature;
- and
- d) at least one reactive surfactant covalently bonded to the surface of said latex particles, wherein the at least one reactive surfactant is selected from the group consisting of sodium allyloxy hydroxypropyl sulfonate, alkenyl-functional nonionic surfmers allyl methoxy triethylene glycol ether, sodium methallyl sulfonates, monosodium ethylsulfonate monododecyl maleate, nonyl phenoxy poly (ethyleneoxy) crotanate, nonyl phenoxy poly (ethyleneoxy) fumarate, and mono dodecyl maleate.
Dependencies are inferred from the claim text.