Abstract: Provided is an aqueous resin composition in which a vinyl ester resin and a urethane resin having an aromatic ring are dispersed in an aqueous medium, in which the vinyl ester resin is obtained by allowing at least one epoxy resin selected from the group consisting of a novolak type epoxy resin and a bisphenol type epoxy resin to react with a compound having an acid group and a polymerizable unsaturated group, and the urethane resin is obtained by allowing polyol containing polyol having an aromatic ring and polyol having a hydrophilic group to react with a polyisocyanate. A primer using the aqueous resin composition is able to considerably improve adhesiveness between a substrate and a cured coating film of an active energy ray curable composition, even when the substrate is a sparingly adhesive substrate.

Abstract: Provided is an aqueous resin composition in which a vinyl ester resin and a urethane resin having an aromatic ring are dispersed in an aqueous medium, in which the vinyl ester resin is obtained by allowing at least one epoxy resin selected from the group consisting of a novolak type epoxy resin and a bisphenol type epoxy resin to react with a compound having an acid group and a polymerizable unsaturated group, and the urethane resin is obtained by allowing polyol containing polyol having an aromatic ring and polyol having a hydrophilic group to react with a polyisocyanate. A primer using the aqueous resin composition is able to considerably improve adhesiveness between a substrate and a cured coating film of an active energy ray curable composition, even when the substrate is a sparingly adhesive substrate.

Abstract: The present invention provides an ink jet recording medium which is capable of uniform coating with an ink-receiving agent without a surface treatment step for a usual plastic film used as a base material, and which, due to excellent adhesion , does not cause the problem of peeling after ink jet printing, and does not cause the problem of ink binning, fading, dropout, or peeling or peeling of an ink-receiving layer and an over-coating layer, and also provides a printed material formed by ink jet printing on the ink jet recording medium. The ink jet recording medium including a first layer containing a polyolefin resin as a main component, a second layer containing an acid-modified olefin resin, and an ink-receiving layer is used, the ink-receiving layer being formed by applying an ink-receiving agent on the second layer after the first and second layers are laminated by a coextrusion laminating method.

Abstract: It is an object of the present invention to provide a water-based composite resin composition which has an excellent long-term storage stability and which enables formation of a coating film having an excellent water resistance and solvent resistance. The present invention relates to a water-based composite resin composition and a coating agent; the water-based composite resin composition containing composite resin particles (A) and an aqueous medium (B), the composite resin particles (A) containing polyester resin (a1) particles having a sulfonate group and an epoxy resin (a2) of which some or all parts are encapsulated in the polyester resin (a1) particles, wherein a mass ratio [(a1)/(a2)] of the polyester resin (a1) to the epoxy resin (a2) in the composite resin particles (A) is in the range of 95/5 to 30/70.

Abstract: A problem to be solved by the present invention is to provide a polyurethane film that offers both soft texture and high strength. The present invention relates to a polyurethane film obtained by solidifying a polyurethane (A) obtained by reacting a polyol (a1) including an aliphatic polyester polyol having an anionic group (a1-1), and a polyester polyol (a1-2) other than the aliphatic polyester polyol (a1-1) with a polyisocyanate (a2), using a metal salt, in which the polyurethane (A) has an aromatic structure in the range of 500 mmol/kg to 2,000 mmol/kg with respect to the entire polyurethane (A).

Abstract: It is an object of the present invention to provide a binder for ink-jet printing ink that can form printed images having excellent scratch resistance and good alcohol resistance without impairing good discharge stability of ink. The present invention relates to a binder for ink-jet printing ink including a polyurethane (A) that has a hydroxyl group at a molecular terminal, has a weight-average molecular weight of 30,000 to 70,000, and is obtained by causing a reaction of a polyisocyanate and a polyol (a2) containing a particular polyether polyol so that the equivalent ratio [isocyanate group [X]/hydroxyl group [Y]] of an isocyanate group [X] in the polyisocyanate (a1) to a hydroxyl group [Y] in the polyol (a2) is in the range of 0.930 to 0.995 and an aqueous medium (B). The hydroxyl group present at the molecular terminal of the polyurethane (A) is a hydroxyl group derived from the polyether polyol.

Abstract: A problem to be solved by the present invention is to provide a polyurethane film that offers both soft texture and high strength. The present invention relates to a polyurethane film obtained by solidifying a polyurethane (A) obtained by reacting a polyol (a1) including an aliphatic polyester polyol having an anionic group (a1-1), and a polyester polyol (a1-2) other than the aliphatic polyester polyol (a1-1) with a polyisocyanate (a2), using a metal salt, in which the polyurethane (A) has an aromatic structure in the range of 500 mmol/kg to 2,000 mmol/kg with respect to the entire polyurethane (A).

Abstract: An object to be achieved by the present invention is to provide a binder for an ink-jet printing ink, the binder being capable of forming a printed image having excellent durability such as rubfastness and alkali resistance without impairing good ejection stability, storage stability, etc. of an ink, and an ink-jet printing ink containing the binder. The present invention relates to a binder for an ink-jet printing ink, the binder containing an aqueous medium (D); and a polyurethane (C) obtained by reacting a polyol (A) containing a vinyl polymer (a1) having two hydroxyl groups at one end and at least one polyol (a2) selected from the group consisting of polyether polyols, polyester polyols, polyester ether polyols, and polycarbonate polyols with a polyisocyanate (B), the polyurethane (C) having a structure derived from the vinyl polymer (a1) in a side chain thereof and being dispersed in the aqueous medium (D), and printed matter.

Abstract: The present invention provides an ink jet recording medium which is capable of uniform coating with an ink-receiving agent without a surface treatment step for a usual plastic film used as a base material, and which, due to excellent adhesion , does not cause the problem of peeling after ink jet printing, and does not cause the problem of ink binning, fading, dropout, or peeling or peeling of an ink-receiving layer and an over-coating layer, and also provides a printed material formed by ink jet printing on the ink jet recording medium. The ink jet recording medium including a first layer containing a polyolefin resin as a main component, a second layer containing an acid-modified olefin resin, and an ink-receiving layer is used, the ink-receiving layer being formed by applying an ink-receiving agent on the second layer after the first and second layers are laminated by a coextrusion laminating method.

Abstract: It is an object of the present invention to provide a water-based composite resin composition which has an excellent long-term storage stability and which enables formation of a coating film having an excellent water resistance and solvent resistance. The present invention relates to a water-based composite resin composition and a coating agent; the water-based composite resin composition containing composite resin particles (A) and an aqueous medium (B), the composite resin particles (A) containing polyester resin (a1) particles having a sulfonate group and an epoxy resin (a2) of which some or all parts are encapsulated in the polyester resin (a1) particles, wherein a mass ratio [(a1)/(a2)] of the polyester resin (a1) to the epoxy resin (a2) in the composite resin particles (A) is in the range of 95/5 to 30/70.

Abstract: An object of the present invention is to provide a method for producing a binder for inks and for use in producing an inkjet printing ink that has both good ink dischargeability and blend stability. A method for producing a binder for inkjet printing inks, the binder containing a hydrophilic-group-containing urethane resin (A), an acetylene compound (B), and an aqueous medium (C), includes step (1) of allowing Ga polyol (a1) containing a hydrophilic-group-containing polyol to react with a polyisocyanate (a2) in an organic solvent or in the absence of a solvent and feeding the organic solvent as needed to prepare an organic solvent solution [I], step (2) of mixing the organic solvent solution [I] with the acetylene compound (B) and the aqueous medium (C) to prepare a mixture [II], and step (3) of removing the organic solvent contained in the mixture [II].

Abstract: It is an object of the present invention to provide a binder for ink-jet printing ink that can form printed images having excellent scratch resistance and good alcohol resistance without impairing good discharge stability of ink. The present invention relates to a binder for ink-jet printing ink including a polyurethane (A) that has a hydroxyl group at a molecular terminal, has a weight-average molecular weight of 30,000 to 70,000, and is obtained by causing a reaction of a polyisocyanate and a polyol (a2) containing a particular polyether polyol so that the equivalent ratio [isocyanate group [X]/hydroxyl group [Y]] of an isocyanate group [?] in the polyisocyanate (a1) to a hydroxyl group [Y] in the polyol (a2) is in the range of 0.930 to 0.995 and an aqueous medium (B). The hydroxyl group present at the molecular terminal of the polyurethane (A) is a hydroxyl group derived from the polyether polyol.

Abstract: The present invention provides an aqueous resin composition that can form a cured resin layer that exhibits high adhesion to a base member and high moisture-heat resistance. The present invention relates to a heat-sealing material including an aqueous urethane resin (A), an aqueous polyolefin resin (B), a cross-linking agent (C), and an aqueous medium (D), wherein the cross-linking agent (C) contains an alkylated methylolmelamine resin (c1) and an epoxy compound (c2), the content of the alkylated methylolmelamine resin (c1) is in the range of 5% to 50% by mass, one or both of the aqueous urethane resin (A) and the aqueous polyolefin resin (B) have a functional group [X] that is capable of reacting with an epoxy group, and the molar ratio of the amount of substance having an epoxy group to the total amount of substance having the functional group [X] is 5/1 to 1/5.

Abstract: A problem to be solved by the present invention is to provide an aqueous urethane resin composition capable of forming a film, a coating film, or the like which has high refractive performance at a level usable for, for example, optical application and which satisfy excellent adhesion to various substrates and excellent blocking resistance. The present invention relates to an aqueous urethane resin composition including a urethane resin (A) and an aqueous medium (B), wherein the urethane resin (A) is produced by reacting a polyether-ester polyol (a1-1) with a polyisocyanate (a2), the polyether-ester polyol (a1-1) being produced by reacting an alkylene oxide adduct of a bisphenol compound with an aromatic polycarboxylic acid.

Abstract: An object to be achieved by the present invention is to provide a binder for an ink-jet printing ink, the binder being capable of forming a printed image having excellent durability such as rubfastness and alkali resistance without impairing good ejection stability, storage stability, etc. of an ink, and an ink-jet printing ink containing the binder. The present invention relates to a binder for an ink-jet printing ink, the binder containing an aqueous medium (D); and a polyurethane (C) obtained by reacting a polyol (A) containing a vinyl polymer (a1) having two hydroxyl groups at one end and at least one polyol (a2) selected from the group consisting of polyether polyols, polyester polyols, polyester ether polyols, and polycarbonate polyols with a polyisocyanate (B), the polyurethane (C) having a structure derived from the vinyl polymer (a1) in a side chain thereof and being dispersed in the aqueous medium (D), and printed matter.

Abstract: It is an object of the present invention to provide a binder for ink-jet printing ink that achieves excellent rubfastness, high durability such as alkali resistance, and good ink dischargeability and that can form a printed image with high gloss and an ink-jet printing ink containing the binder. The present invention relates to a binder for ink-jet printing ink in which a vinyl polymer (B) is dispersed in an aqueous medium (D) by a urethane resin (A) having a hydrophilic group.

Abstract: An object of the present invention is to provide a method for producing a binder for inks and for use in producing an inkjet printing ink that has both good ink dischargeability and blend stability. A method for producing a binder for inkjet printing inks, the binder containing a hydrophilic-group-containing urethane resin (A), an acetylene compound (B), and an aqueous medium (C), includes step (1) of allowing Ga polyol (a1) containing a hydrophilic-group-containing polyol to react with a polyisocyanate (a2) in an organic solvent or in the absence of a solvent and feeding the organic solvent as needed to prepare an organic solvent solution [I], step (2) of mixing the organic solvent solution [I] with the acetylene compound (B) and the aqueous medium (C) to prepare a mixture [II], and step (3) of removing the organic solvent contained in the mixture [II].

Abstract: Disclosed is an aqueous coating agent comprising a water dispersion (C) prepared by dispersing resin particles containing a water-dispersible polyurethane resin (A) and at least one compound selected from a hydrophobic polyester polyol (B-1) and a hydrophobic polyether polyol (B-2) in water, and a crosslinking agent (D) capable of reacting with a hydroxyl group, wherein the water-dispersible polyurethane resin (A) is obtained by reacting a polyester polyol (a-1), which is obtained by condensing a dicarboxylic acid containing an aromatic dicarboxylic acid as a main component with a polyol, with a polyisocyanate, and also contains 15 to 35% by weight of an aromatic cyclic structural unit, and wherein the hydrophobic polyester polyol (B-1) and/or the hydrophobic polyether polyol (B-2) are liquid at normal temperature and contain 20 to 50% by weight of an aromatic cyclic structural unit.

Abstract: An aqueous urethane resin dispersion for bonding can be used in wet lamination and dry lamination and can be reactivated easily at a low temperature of about 50 to 70° C. after drying, and is also superior in coatability, adhesive strength, and heat resistance. The aqueous dispersion of a polyurethane resin is superior in contact adhesiveness immediately after lamination and also has good permeability and good coatability not only on bases having smooth surfaces such as plastics and metals, but also on porous bases such as fibers, papers, and buffed leathers; an aqueous adhesive using the aqueous dispersion; and an article to which it is applied. The aqueous polyurethane resin dispersion has at least one of a sulfonate group and a carboxylate group, wherein an average particle diameter of the polyurethane resin is 0.05 to 0.30 ?m and a surface tension of the aqueous dispersion (A) is 40 mN/m or less.

Abstract: Disclosed is an aqueous coating agent comprising a water dispersion (C) prepared by dispersing resin particles containing a water-dispersible polyurethane resin (A) and at least one compound selected from a hydrophobic polyester polyol (B-1) and a hydrophobic polyether polyol (B-2) in water, and a crosslinking agent (D) capable of reacting with a hydroxyl group, wherein the water-dispersible polyurethane resin (A) is obtained by reacting a polyester polyol (a-1), which is obtained by condensing a dicarboxylic acid containing an aromatic dicarboxylic acid as a main component with a polyol, with a polyisocyanate, and also contains 15 to 35% by weight of an aromatic cyclic structural unit, and wherein the hydrophobic polyester polyol (B-1) and/or the hydrophobic polyether polyol (B-2) are liquid at normal temperature and contain 20 to 50% by weight of an aromatic cyclic structural unit.