Abstract: A method for manufacturing a forged article, capable of improving the durability of a die for forging is provided. The method, includes forging a steel material, by using a die, by spraying or applying a water-soluble polymer lubricant containing 0.01 to 0.98 mass % of a water-soluble sulfate onto a working surface of the die, the die being made of a raw material having a constituent composition of by mass %, of 0.4 to 0.7% of C, 1.0% or less of Si, 1.0% or less of Mn, 4.0 to 6.0% of Cr, 2.0 to 4.0% of (Mo+½W), 0.5 to 2.5% of (V+Nb), 0 to 1.0% of Ni, 0 to 5.0% of Co, 0.02% or less of N, and a remnant composed of Fe and impurities, and having hardness of 55 to 60 HRC, and the die including a nitrided layer or a nitrosulfidized layer on the working surface thereof.

Abstract: Provided is an aqueous ink for ink jet containing a pigment and a resin particle that disperses the pigment. The cumulative 50% particle size of the resin particle in a volume-based particle size distribution is 10 nm or less. The resin particle has a crosslinking structure. The ratio of the cumulative 50% particle size of the pigment in a volume-based particle size distribution to the cumulative 50% particle size of the resin particle in a volume-based particle size distribution is 3.0 times or more to 8.0 times or less. Also, provided are an ink cartridge and an ink jet recording method using this aqueous ink.

Abstract: Provided is an aqueous ink for ink jet containing coloring material-particle and resin particle. The resin particle is formed from a crystalline polyester resin having carboxylic acid groups. A difference between a 50% cumulative particle diameter (D50C) in a volume-based particle size distribution of the coloring material-particle and a 50% cumulative particle diameter (D50R) in a volume-based particle size distribution of the resin particle (D50C-D50R) is 10 nm or more. In addition, an ink cartridge and an ink jet recording method using this aqueous ink are provided.

Abstract: To provide an aqueous ink having excellent ejection stability and capable of recording an image having excellent abrasion resistance and the like. An aqueous ink for ink jet containing a resin particle, in which the resin particle is formed of a first resin and a second resin, each having a carboxylic acid group, the first resin is a polyester resin not having a crosslinked structure, the second resin is at least one of a polyester resin and an acrylic resin having a crosslinked structure, and the crosslinked structure of the first resin and the second resin is an alkylene oxide group having a repetition number of 1 to 9.

Abstract: An aqueous ink jet ink contains a pigment, a resin and an additive. The resin has a unit containing a carboxylic acid group and a unit containing an aromatic group. The additive is at least one member selected from the group consisting of butanedicarboxylic acid, pentanedicarboxylic acid, pentanetricarboxylic acid, hexanedicarboxylic acid, hexanetricarboxylic acid, heptanetricarboxylic acid, octanetricarboxylic acid and nonanetricarboxylic acid. The content (ppm) of the additive is 180 ppm or more to 1,200 ppm or less with respect to the total mass of the ink.

Abstract: To provide an aqueous ink having excellent storage stability and capable of recording an image having excellent abrasion resistance and the like. An aqueous ink for ink jet containing a resin particle, in which the resin particle is formed of a polyester resin having a carboxylic acid group, and an amount of carboxylic acid groups present on particle surfaces of the resin particle is 0.3 times or more to 0.8 times or less in terms of molar ratio with respect to all of the carboxylic acid groups in the polyester resin having the carboxylic acid group.

Abstract: Provided are an aqueous ink for ink jet capable of recording an image having excellent abrasion resistance and glossiness and an ink cartridge and an ink jet recording method using the aqueous ink. Provided is an aqueous ink for ink jet including a coloring material and a plurality of resins (first resin and second resin) different from the coloring material. The first resin is a resin particle formed of a first polyester resin and the second resin is at least one of (i) a block copolymer containing an A block having no acid group and a B block having an acid group and (ii) a second polyester resin having a sulfonic acid group. Further, an ink cartridge using the aqueous ink and an ink jet recording method in which the aqueous ink is ejected from an ink jet recording head to record an image on a recording medium are provided.

Abstract: To provide an aqueous ink having excellent storage stability and capable of recording an image having excellent abrasion resistance and the like. An aqueous ink for ink jet containing a resin particle, in which the resin particle is formed of a polyester resin having a carboxylic acid group, and an amount of carboxylic acid groups present on particle surfaces of the resin particle is 0.3 times or more to 0.8 times or less in terms of molar ratio with respect to all of the carboxylic acid groups in the polyester resin having the carboxylic acid group.

Abstract: To provide an aqueous ink having excellent ejection stability and capable of recording an image having excellent abrasion resistance and the like. An aqueous ink for ink jet containing a resin particle, in which the resin particle is formed of a first resin and a second resin, each having a carboxylic acid group, the first resin is a polyester resin not having a crosslinked structure, the second resin is at least one of a polyester resin and an acrylic resin having a crosslinked structure, and the crosslinked structure of the first resin and the second resin is an alkylene oxide group having a repetition number of 1 to 9.

Abstract: To provide a compound and a tumor therapeutic agent which are highly effective in cancer therapy and are less likely to cause hypertension as a side effect, and to provide development of a drug for elucidating the action mechanism of lenvatinib to help further development of new drugs. The lenvatinib derivative of the present invention comprises a compound represented by the following chemical structural formula (1) (wherein R represents an alkylene group which may have a branch) and a salt thereof, and a solvate thereof. This derivative has a nitric acid ester group, and thus produces nitric oxide (NO) having a vasodilating action in vivo, so that a higher-concentration lenvatinib component can be expected to arrive at target molecules present in cancer cells and vascular endothelial cells on the host side and also can suppress hypertension as a side effect.

Abstract: An aqueous ink for ink jet, the aqueous ink containing a pigment and a resin. The pigment is impregnated with a compound having a structure in which at least two structures each represented by General Formula (1) are bonded by a glycoside bond.

Abstract: An aqueous ink for ink jet, the aqueous ink containing a pigment and a resin. The pigment is impregnated with a compound having a structure in which at least two structures each represented by General Formula (1) are bonded by a glycoside bond.

Abstract: An ink jet ink including water, a pigment and a polymer. The pigment has a secondary amino group. The polymer contains a unit derived from a monomer having a ring structure containing a tertiary amino group.

Abstract: Provided is a synthesis method for a self-dispersible pigment, including performing ring-opening addition of a lactone-based compound to an acidic group bonded to a surface of a pigment particle directly or via another atomic group to bond a functional group including an ester group to the surface of the pigment particle.

Abstract: An ink jet ink including water, a pigment and a polymer. The pigment has a secondary amino group. The polymer contains a unit derived from a monomer having a ring structure containing a tertiary amino group.

Abstract: An image recording method including applying an ink onto a recording medium; and applying a liquid composition that destabilizes a dispersion state of a pigment in the ink onto the recording medium so as to at least partially overlap with a region in which the ink is applied. The ink contains the pigment, a first soluble polymer, a second soluble polymer, polymer particles, and water. The first water-soluble polymer has a weight-average molecular weight of 1,000-4,000 and has an acid value of 150-300 mgKOH/g. The second water-soluble polymer has an aromatic group and has a weight-average molecular weight of 5,000-30,000 and an acid value of 50-150 mgKOH/g. The polymer particles have a rate of change in volume-average particle size of 20% or less between a pH of 7 and a pH of 9.

Abstract: To provide an ink jet ink capable of achieving both high colorability and excellent bleeding resistance of an image and having excellent storage stability, provided is an ink jet ink including at least a pigment and a star polymer having a structure represented by at least one formula selected from the group consisting of the following general formulae (1) to (3).

Abstract: An ink jet liquid composition which is used with an ink containing a pigment and which contains an ABC triblock polymer formed from an A block having an aryl group, a B block having a unit represented by the general formula (1), and a C block having a unit represented by the general formula (2), wherein an acid value of the polymer is 20 mgKOH/g or more and less than 150 mgKOH/g, the ratio of the number average molecular weight of the polymer to the acid value is 50 or more and 200 or less, the proportion of the A block in the polymer is 20.0 percent by mass or more and 80.0 percent by mass or less and is 5.0 times or more and 15.0 times or less the proportion of units derived from all acidic monomers contained in the polymer.

Abstract: Provided is an ink jet clear ink containing a polymer fine particle. The polymer fine particle has a core-shell structure obtained by polymerizing an ?,?-ethylenically unsaturated hydrophobic monomer (b) as a core polymer in the presence of a shell polymer that is a copolymer having at least a unit derived from an ?,?-ethylenically unsaturated hydrophobic monomer (a) and a unit derived from a monomer selected from an ?,?-ethylenically unsaturated acid monomer and a salt thereof. The ?,?-ethylenically unsaturated hydrophobic monomer (b) includes at least a monomer containing a chain structure saturated alkyl group.

Abstract: Provided is a synthesis method for a self-dispersible pigment, including performing ring-opening addition of a lactone-based compound to an acidic group bonded to a surface of a pigment particle directly or via another atomic group to bond a functional group including an ester group to the surface of the pigment particle.