Abstract: An aqueous pigment dispersion which contains C.I. Pigment Yellow 74, a styrene-acrylic-based resin with an acid number of 100 to 250, and a basic compound, wherein the styrene-acrylic-based resin includes at least styrene-based monomer units, acrylic acid monomer units, and methacrylic acid monomer units as component monomer units, and the weight average molecular weight of the resin is within a range from 7,000 to 15,000.

Abstract: A process is provided for producing aqueous pigment dispersions for ink-jet recording in which fine pigments are stably dispersed and such a state can be maintained for a long period of storing. Moreover, a process is provided for producing aqueous pigment dispersions for ink-jet recording in which the time required for production such as dispersing time is short, and the production efficiency is high. The process for producing aqueous pigment dispersions for ink-jet recording includes a first step of kneading (1) a styrene-acrylic type resin with a styrene type monomer unit of 50 to 90 mass %, and at least one unit selected from an acrylic monomer unit and methacrylic monomer unit, having an acid value of 50 to 300, (2) a pigment, (3) a basic compound, and (4) a humectant to produce a solid colored kneaded product, and a second step of dispersing the solid colored kneaded product in an aqueous medium comprising water or water and humectant.

Abstract: The applicants provide a process for producing an aqueous pigment liquid dispersion that is formed by mixing a solid kneaded mixture containing a pigment (a) containing mainly an azo-type pigment, a styrene-acrylic acid copolymer (b), a basic compound (c), and a wetting agent (d1), with an aqueous medium, the process including a liquefaction step of adding water (e) and a wetting agent (d2) while continuing the kneading of the solid kneaded mixture, thereby generating a liquid state, wherein the total quantity of the wetting agent (d2) added in the liquefaction step is within a range from 0.5 to 40 mass % of the solid kneaded mixture at the point of initiation of the liquefaction step.

Abstract: A process is provided for producing aqueous pigment dispersions for ink-jet recording in which fine pigments are stably dispersed and such a state can be maintained for a long period of storing. Moreover, a process is provided for producing aqueous pigment dispersions for ink-jet recording in which the time required for production such as dispersing time is short, and the production efficiency is high. The process for producing aqueous pigment dispersions for ink-jet recording includes a first step of kneading (1) a styrene-acrylic type resin with a styrene type monomer unit of 50 to 90 mass %, and at least one unit selected from an acrylic monomer unit and methacrylic monomer unit, having an acid value of 50 to 300, (2) a pigment, (3) a basic compound, and (4) a humectant to produce a solid colored kneaded product, and a second step of dispersing the solid colored kneaded product in an aqueous medium comprising water or water and humectant.

Abstract: An aqueous pigment dispersion which contains C.I. Pigment Yellow 74, a styrene-acrylic-based resin with an acid number of 100 to 250, and a basic compound, wherein the styrene-acrylic-based resin includes at least styrene-based monomer units, acrylic acid monomer units, and methacrylic acid monomer units as component monomer units, and the weight average molecular weight of the resin is within a range from 7,000 to 15,000.

Abstract: The invention is intended to reduce heat accumulation in the heat insulator provided around the periphery of the living room of a house structure, thereby achieving simplification of a construction work, energy-saving, and rationalization in maintaining the living environment, and by covering the external face of the heat insulators (2) disposed around the periphery of partition sheet members surrounding the living room, such as the roof, ceiling, wall, and so forth, with the heat shielding members (1) provided with the heat reflection foil, so that radiant heat which will otherwise heat up the heat insulators (2) can be blocked, and heat accumulation in the heat insulators (2) can be reduced.

Abstract: The invention is intended to reduce heat accumulation in the heat insulator provided around the periphery of the living room of a house structure, thereby achieving simplification of a construction work, energy-saving, and rationalization in maintaining the living environment, and by covering the external face of the heat insulators (2) disposed around the periphery of partition sheet members surrounding the living room, such as the roof, ceiling, wall, and so forth, with the heat shielding members (1) provided with the heat reflection foil, so that radiant heat which will otherwise heat up the heat insulators (2) can be blocked, and heat accumulation in the heat insulators (2) can be reduced.

Abstract: An aqueous jet ink which is provided with a long-term dispersion stability, a stable emission property as a ink-jet stream, and good adhesion of printed images to the recording medium. The present jet ink is constituted as an aqueous liquid dispersion of fine color particles which are formed by coating fine pigment particles (a) with a coat forming resin having carboxyl groups (b). The surface of the color particles is covered with the quaternary carboxyl groups in a form of quaternary ammonium salt and the average volume diameter of the fine color particles is restricted to less than 0.5 .mu.m. An increase rate of the average volume diameter of the fine color particles when the dried ink is dispersed again in water is also restricted to less than 50%.

Abstract: An ink for jet printer is disclosed, which contains an oil soluble dye, a synthetic resin, and an organic solvent, wherein the synthetic resin contains a terpene-phenol copolymer resin and a styrene-acrylic copolymer resin.

Abstract: An organic solvent-based ink composition for ink jet printer comprises a dye or dyes dissolved in a mixed solvent of a good solvent and a poor solvent, wherein(1) a solvent having a dye solubility of at least 4% by weight is used as the good solvent,(2) a solvent having a dye solubility of less than 0.5% by weight is used as the poor solvent, and(3) when the dye solubility for the aforesaid mixed solvent is a % by weight and the concentration of the dye or dyes in the ink composition to the mixed solvent is b % by weight, the value of a/b is within the range of from 1.0 to 3.0.

Abstract: An organic solvent-based ink for ink-jet printer comprises at least one compound selected from the group consisting of an aromatic sulfonamide and a hydroxybenzoic acid ester and an oil-soluble dye dissolved in an organic solvent.

Abstract: A hot-melt type ink for thermal ink-jet printers comprises an oil-soluble dye dissolved in at least one compound selected from the group consisting of a phosphoric acid ester, an aromatic sulfonamide, a hydroxybenzoic acid ester and a phthalic acid ester, the compound being in solid state at room temperature.