Patent application number | Description | Published |
20090137731 | Surface-Modified Carbon Black and Dispersion Thereof - Surface-modified carbon black which exhibits excellent dispersibility in a silicone oil (non-polar medium) and a dispersion of the surface-modified carbon black are disclosed. The surface-modified carbon black includes an isocyanate compound having isocyanate groups on both ends and chemically bonded to a functional group on the surface of the carbon black, the isocyanate compound being chemically bonded to a reactive silicone polymer. The surface-modified carbon black dispersion is produced by dissolving an isocyanate compound having isocyanate groups on both ends in a solvent, adding carbon black to the solution, mixing the components so that one of the isocyanate groups is bonded to the surface of the carbon black via a urethane bond, removing an unreacted isocyanate compound, dispersing the carbon black in a silicone oil, and adding a reactive silicone polymer to the dispersion, followed by mixing and deaeration. | 05-28-2009 |
20090234063 | Aqueous Carbon Black Pigment and Aqueous Dispersion Thereof - An aqueous carbon black pigment that is suitable for an inkjet printer ink and the like and ensures that a printed article exhibits excellent water resistance and fixability, and an aqueous dispersion of the aqueous carbon black pigment are disclosed. The aqueous carbon black pigment includes oxidized carbon black, a water-soluble resin, and an aqueous medium, the oxidized carbon black and the water-soluble resin being crosslinked in the aqueous medium using a water-dispersible crosslinking agent. The water-soluble resin is preferably a resin that contains acrylic acid and/or an acrylic acid derivative as a monomer unit, a resin that contains a maleic acid and/or a maleic acid derivative as a monomer unit, a resin that contains a styrene-acrylic acid copolymer as a main component, a resin that contains a styrene-maleic acid copolymer or a styrene-maleic anhydride copolymer as a main component, or the like. The water-dispersible crosslinking agent is preferably an isocyanate compound. A carbon black aqueous dispersion includes the aqueous carbon black pigment and an aqueous medium, the aqueous carbon black pigment being dispersed in the aqueous medium at a concentration suitable for the desired application. | 09-17-2009 |
20100018437 | Carbon Black Aqueous Dispersion and Method of producing the Same - A carbon black aqueous dispersion which has excellent dispersibility in an aqueous medium and is suitable as an aqueous black ink such as an inkjet printer ink, and a method of producing the same. The carbon black aqueous dispersion includes an aqueous medium and a carbon black pigment dispersed in the aqueous medium, wherein some or all of hydrogen atoms of acidic groups produced by liquid-phase oxidation of the carbon black are replaced with a basic amino acid salt group by neutralization with a basic amino acid. The method of producing a carbon black aqueous dispersion includes subjecting carbon black to liquid-phase oxidation, removing reduced salts from the resulting slurry, neutralizing the slurry with a basic amino acid to replace some or all of hydrogen atoms of acidic groups with a basic amino acid salt group to form a basic amino acid salt compound, and purifying the resulting product. | 01-28-2010 |
20100120997 | DISPERSIBLE SURFACE-MODIFIED CARBON BLACK - Dispersible surface-modified carbon black that is surface-modified by causing a functional group on the surface of the carbon black to be bonded to a diol-modified end-containing polymer through a triisocyanate compound exhibits excellent dispersibility in a non-polar solvent, a low-polar solvent, and a resin. The dispersible surface-modified carbon black is characterized in that a surface functional group of the carbon black is bonded to one isocyanate end group of a triisocyanate compound having three isocyanate end groups, and the remaining two isocyanate end groups are respectively bonded to hydroxyl groups of a diol-modified end-containing polymer. | 05-13-2010 |
20100269732 | AQUEOUS DISPERSION OF SURFACE-TREATED CARBON BLACK AND METHOD OF PRODUCING THE SAME - A carbon black aqueous dispersion that is suitable as an aqueous black ink for inkjet printers, and a method of producing the same are disclosed. A surface-treated carbon black aqueous dispersion includes an aqueous medium and surface-treated carbon black that is dispersed in the aqueous medium, the surface-treated carbon black having been chemically modified by causing a hydrophilic surface functional group of the carbon black and an amino group-containing compound to undergo a dehydration-condensation reaction in the presence of a triazine condensing agent to form an amide bond. A method of producing a surface-treated carbon black aqueous dispersion includes oxidizing carbon black to produce a hydrophilic surface functional group, dispersing the carbon black in an aqueous medium to obtain an aqueous medium dispersion, adding an amino group-containing compound and a triazine condensing agent to the aqueous medium dispersion, causing the hydrophilic surface functional group of the carbon black and the amino group-containing compound to undergo a dehydration-condensation reaction by stirring the aqueous medium dispersion at room temperature, and removing large particles, unreacted amino group-containing compound, a decomposition product of the triazine condensing agent, and unreacted triazine condensing agent, followed by neutralization, purification, and concentration. | 10-28-2010 |
20110253008 | AQUEOUS DISPERSION OF SURFACE-TREATED CARBON BLACK AND METHOD OF PRODUCING THE SAME - A carbon black aqueous dispersion that is suitable as an aqueous black ink for inkjet printers, and a method of producing the same are disclosed. A surface-treated carbon black aqueous dispersion includes an aqueous medium and surface-treated carbon black that is dispersed in the aqueous medium, the surface-treated carbon black having been chemically modified by causing a hydrophilic surface functional group of the carbon black and an amino group-containing compound to undergo a dehydration-condensation reaction in the presence of a triazine condensing agent to form an amide bond. A method of producing a surface-treated carbon black aqueous dispersion includes oxidizing carbon black to produce a hydrophilic surface functional group, dispersing the carbon black in an aqueous medium to obtain an aqueous medium dispersion, adding an amino group-containing compound and a triazine condensing agent to the aqueous medium dispersion, causing the hydrophilic surface functional group of the carbon black and the amino group-containing compound to undergo a dehydration-condensation reaction by stirring the aqueous medium dispersion at room temperature, and removing large particles, unreacted amino group-containing compound, a decomposition product of the triazine condensing agent, and unreacted triazine condensing agent, followed by neutralization, purification, and concentration. | 10-20-2011 |
20120190789 | PREPARATION METHOD FOR AQUEOUS POLYURETHANE RESIN-PIGMENT DISPERSION, AQUEOUS POLYURETHANE RESIN-PIGMENT DISPERSION, AND INK COMPOSITION - A method of producing a polyurethane resin-bonded pigment aqueous dispersion includes causing (I) a pigment having a surface acidic group to come in contact with (II) a basic compound having two or more amino groups selected from a primary amino group and a secondary amino group in its molecule in an aqueous medium so that the pigment has an unreacted surface amino group, and causing the pigment to come in contact and react with (III) a polyurethane resin having an isocyanate end group. A polyurethane resin-bonded pigment aqueous dispersion produced by the method exhibits excellent image density, dispersibility, and storage stability. | 07-26-2012 |
20140000488 | METHOD FOR PRODUCING AQUEOUS DISPERSION OF SURFACE-TREATED CARBON BLACK PARTICLES AND AQUEOUS DISPERSION OF SURFACE-TREATED CARBON BLACK PARTICLES | 01-02-2014 |