Abstract: Provided is a fiber sizing agent including a vinyl ester resin (A), an epoxy compound (B), and an aqueous medium. The vinyl ester resin (A) has an alkoxy polyoxyalkylene structure and a urethane linkage. The fiber sizing agent exhibits excellent binding ability for various fibers, such as glass fibers and carbon fibers. Molded articles produced from a molding material including the fiber sizing agent have various excellent physical properties, and examples of the physical properties include flexural strength, compressive strength, and interlaminar shear strength. Accordingly, the molded articles can be used, for example, in automotive parts, aircraft parts, windmill parts, industrial parts, and the like.

Abstract: Provided is an aqueous resin composition that is capable of forming a film having excellent balance in solvent resistance, water resistance, flexibility, stretchability, and strength. An aqueous resin composition of the invention, contains: a composite resin (A); and an aqueous medium (B), in which the composite resin (A) has a polymer (A1) unit having a unit represented by Formula (1) and a polymer (A2) unit represented by Formula (3). [R1s each represent a hydrogen atom, a halogen atom, a phenyl group, or a methyl group. R2 represents a hydrogen atom or a hydrocarbon group having 1 to 5 carbon atoms. R7 represents a ml-valent hydrocarbon group having 1 to 20 carbon atoms. R8 represents one type of R10[-L1-(R11—O—)n1]n2—; —O(—R11—CO—O)n3—; —O(—R11—O—CO—R11—CO—O)n4—; —O(—R11—O—CO—O)n5—; —O(—R12)n6—O—; —O—R11—O—, and a group obtained by combining such groups.

Abstract: The present invention uses a urethane resin composition including a urethane resin (A), a multifunctional acrylate (B), and a solvent (C). The urethane resin (A) is a reaction product of a polyol (a1) and a polyisocyanate (a2). The polyol (a1) includes an alkylene diol (a1-1) having two or more polymerizable unsaturated groups and represented by general formula (1) or an oxyalkylene diol (a1-2) having two or more polymerizable unsaturated groups and represented by general formula (2) below. The proportion of polymerizable unsaturated bonds in the urethane resin composition is within a range of 3 to 9 mmol/g. The urethane resin composition is a urethane resin composition that can form a coating film having excellent hardness, scratch resistance, and flexibility.

Abstract: The present invention uses a urethane resin composition including a urethane resin (A), a multifunctional acrylate (B), and a solvent (C). The urethane resin (A) is a reaction product of a polyol (a1) and a polyisocyanate (a2). The polyol (a1) includes an alkylene diol (a1-1) having two or more polymerizable unsaturated groups and represented by general formula (1) or an oxyalkylene diol (a1-2) having two or more polymerizable unsaturated groups and represented by general formula (2) below. The proportion of polymerizable unsaturated bonds in the urethane resin composition is within a range of 3 to 9 mmol/g. The urethane resin composition is a urethane resin composition that can form a coating film having excellent hardness, scratch resistance, and flexibility.

Abstract: The present invention provides an aqueous urethane resin composition containing (A) a urethane resin, (B) an organic solvent having a boiling point of 150 to 350° C., and (C) an aqueous medium, the aqueous urethane resin composition being characterized in that the organic solvent (B) has a Hansen solubility parameter in which a dispersion member (?d) is 15.5 MPa0.5 or more and less than 20 MPa0.5, a polar member (?p) is 4.5 MPa0.5 or more and less than 12 MPa0.5, and a hydrogen-bonding member (?h) is 3 MPa0.5 or more and less than 10.5 MPa0.5. The aqueous urethane resin composition has excellent film formability, corrosion resistance, chemical resistance, and substrate adhesiveness, and is capable of forming a low-toxic coating film.

Abstract: The present invention provides an aqueous coating agent including a vinyl polymer (A) having a basic nitrogen atom-containing group and a carboxylic group, a quaternary ammonium salt (B), and an aqueous medium (C). Particularly, the present invention provides an aqueous coating agent including a compound represented by General Formula (1) below as the quaternary ammonium salt (B). The aqueous coating agent has excellent adhesiveness, warm water resistance, corrosion resistance, and chemical resistance, and can form a film that is capable of preventing the deterioration of various substrates. In General Formula (1), R1 to R4 each independently represent an alkyl group having 1 to 20 carbon atoms or an aryl group.

Abstract: The present invention provides an aqueous coating agent including a vinyl polymer (A) having a basic nitrogen atom-containing group and a carboxylic group, a quaternary ammonium salt (B), and an aqueous medium (C). Particularly, the present invention provides an aqueous coating agent including a compound represented by General Formula (1) below as the quaternary ammonium salt (B). The aqueous coating agent has excellent adhesiveness, warm water resistance, corrosion resistance, and chemical resistance, and can form a film that is capable of preventing the deterioration of various substrates. In General Formula (1), R1 to R4 each independently represent an alkyl group having 1 to 20 carbon atoms or an aryl group.

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: Disclosed is a coating agent characterized by comprising: a core-shell-type resin particles (A) each having a shell layer and a core layer; a compound (B) having at least one selected from the group consisting of a hydrolysable silyl group and a silanol group and also having an epoxy group; and an aqueous medium, wherein the shell layer comprises (a1) a urethane resin with 2000 to 5500 mmol/kg of an aliphatic cyclic structure and at least one selected from the group consisting of a carboxyl group and a carboxylate group and the core layer comprises (a2) a vinyl polymer having a basic nitrogen-atom-containing group. Further disclosed are a coating agent for a plastic base material and a coating agent for a metallic base material.

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: 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: 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: The present invention relates to a binder for an ink-jet printing ink, the binder containing an aqueous medium (D); and a polyurethane (C) having a weight-average molecular weight of 30,000 to 200,000 and obtained by reacting a polyol (A) containing an alicyclic structure-containing polyol (a1) and a hydrophilic group-containing polyol (a2) with a polyisocyanate (B), the polyurethane (C) being dispersed in the aqueous medium (D), wherein a ratio of an alicyclic structure contained in the polyurethane (C) relative to the total mass of the polyurethane (C) is 1,000 to 5,500 mmol/kg, an ink-jet printing ink containing the binder, and printed matter.

Abstract: The present invention relates to a binder for an inkjet printing ink, the binder including a polysiloxane (A), a hydrophilic-group-containing polyurethane (B), and an aqueous medium (C), wherein the polysiloxane (A) and the hydrophilic-group-containing polyurethane (B) form composite resin particles and the polysiloxane (A) is dispersed in the aqueous medium (C) with the hydrophilic-group-containing polyurethane (B); an ink for inkjet printing; and a printed product.

Abstract: The present invention relates to an aqueous hybrid resin composition containing: a hybrid resin (A) in which a hydrophilic group-containing polyurethane (a1) and a vinyl polymer (a2) are bound via a polysiloxane (a3); and an aqueous medium, wherein a weight ratio of a structure derived from the aforementioned polysiloxane (a3) with respect to the entire hybrid resin (A) ranges from 15% to 55% by weight, and also relates to a coating preparation for use in a metal substrate and a coating preparation for use in a plastic substrate, containing the aforementioned aqueous hybrid resin composition.