Abstract: An object of the invention is to provide a urethane resin composition containing a biomass raw material and having excellent moisture permeability and excellent film strength. The invention provides a urethane resin composition containing a urethane resin (X), the urethane resin (X) containing, as essential raw materials, a polyol (A) that contains a polyol (a1) having an oxyethylene group, and a polyisocyanate (B), in which the polyol (A) further contains a polyester polyol (a2) containing a biomass-derived glycol (i) and a crystalline polybasic acid (ii) as raw materials, and the polyol (A) has a hydroxyl equivalent in a range of 400 g/eq to 600 g/eq. In addition, the invention provides a moisture-permeable film which is formed of the urethane resin composition.

Abstract: An object to be achieved by the present invention is to provide a method for producing an artificial leather on a practically usable level without using an organic solvent and without requiring a crosslinking step for a crosslinking agent. The present invention provides a method for producing an artificial leather having a cured product layer of a moisture-curing urethane hot-melt resin composition, wherein the moisture-curing urethane hot-melt resin composition contains a urethane prepolymer having an isocyanate group and does not contain a crosslinking agent having a hydroxyl group and/or an amino group, the method including applying the moisture-curing urethane hot-melt resin composition to a substrate at a coating weight of 0.03 to 0.5 kg/m2 so as to form a cured product layer of the moisture-curing urethane hot-melt resin composition.

Abstract: A moisture-permeable waterproof fabric includes: a cloth (i), an adhesive layer (ii), and a surface skin layer (iii). The adhesive layer (ii) is formed from a moisture-curable polyurethane hot melt resin composition that contains a urethane prepolymer (C) having an isocyanate group, and the urethane prepolymer (C) is a reaction product of a polyisocyanate (B) and a polyol (A) containing a biomass-derived polyester polyol (a1). The surface skin layer (iii) is formed from a urethane resin composition that contains a urethane resin (R) containing a polyol (P) and a polyisocyanate (Q) as essential raw materials thereof, and the polyol (P) contains a polyol (P1) having an oxyethylene group and a specific polyester polyol (P2).

Abstract: An object of the invention is to provide a urethane resin composition containing a biomass raw material and having excellent moisture permeability and excellent film strength. The invention provides a urethane resin composition containing a urethane resin (X), the urethane resin (X) containing, as essential raw materials, a polyol (A) that contains a polyol (a1) having an oxyethylene group, and a polyisocyanate (B), in which the polyol (A) further contains a polyester polyol (a2) containing a biomass-derived glycol (i) and a crystalline polybasic acid (ii) as raw materials, and the polyol (A) has a hydroxyl equivalent in a range of 400 g/eq to 600 g/eq. In addition, the invention provides a moisture-permeable film which is formed of the urethane resin composition.

Abstract: The present invention provides a moisture-curable hot melt urethane composition, including a hot melt urethane prepolymer (A) having an isocyanate group and a foaming agent composition (B) containing N,N?-dinitrosopentamethylenetetramine (b1), urea (b2) and a polyol (b3). The present invention also provides a method for producing a foamed and cured product of a moisture-curable hot melt composition, which includes heat-melting a hot melt urethane prepolymer (A), then mixing the foaming agent composition (B) therewith, applying the resultant mixture to a substrate, and performing a heating treatment at a temperature equal to or higher than heat-melting temperature of the (A) to thereby cause foaming and curing. An object of the present invention is to provide a solvent-free foaming system, according to which a foamed and cured product with excellent texture can be obtained, and an excellent foamed state can be maintained even in a thin film.

Abstract: An object to be achieved by the present invention is to provide a method for producing an artificial leather on a practically usable level without using an organic solvent and without requiring a crosslinking step for a crosslinking agent. The present invention provides a method for producing an artificial leather having a cured product layer of a moisture-curing urethane hot-melt resin composition, wherein the moisture-curing urethane hot-melt resin composition contains a urethane prepolymer having an isocyanate group and does not contain a crosslinking agent having a hydroxyl group and/or an amino group, the method including applying the moisture-curing urethane hot-melt resin composition to a substrate at a coating weight of 0.03 to 0.5 kg/m2 so as to form a cured product layer of the moisture-curing urethane hot-melt resin composition.

Abstract: The present invention provides a synthetic leather at least including a base fabric (i), an intermediate layer (ii), and a skin layer (iii), in which the intermediate layer (ii) is formed of a moisture-curable hot-melt urethane resin composition containing a hot-melt urethane prepolymer (A1) having an isocyanate group and a foaming agent composition (A2), the skin layer (iii) is formed of an aqueous urethane resin composition (Z) containing a urethane resin (X) and an aqueous medium (Y), and the urethane resin (X) is a reaction product obtained by using a polyol (b1), a reactive silicone (b2) having a functional group which reacts with an isocyanate group, and a polyisocyanate (b3) as essential raw materials.

Abstract: The present invention provides a moisture-curable hot melt urethane composition, including a hot melt urethane prepolymer (A) having an isocyanate group and a foaming agent composition (B) containing N,N?-dinitrosopentamethylenetetramine (b1), urea (b2) and a polyol (b3). The present invention also provides a method for producing a foamed and cured product of a moisture-curable hot melt composition, which includes heat-melting a hot melt urethane prepolymer (A), then mixing the foaming agent composition (B) therewith, applying the resultant mixture to a substrate, and performing a heating treatment at a temperature equal to or higher than heat-melting temperature of the (A) to thereby cause foaming and curing. An object of the present invention is to provide a solvent-free foaming system, according to which a foamed and cured product with excellent texture can be obtained, and an excellent foamed state can be maintained even in a thin film.

Abstract: An oxygen-barrier film and an adhesive used therefor. Provided are an adhesive, which can be used for packaging foodstuffs and contains mainly a polyester having excellent oxygen-barrier properties, and an oxygen-barrier film that uses the adhesive. The oxygen-barrier film is prepared using an adhesive that includes: an amorphous polyester polyol, which is obtained by polycondensation of a polyvalent carboxylic acid component including at least one type of ortho-oriented aromatic dicarboxylic acid or anhydride thereof, and a polyhydric alcohol including at least one compound selected from the group consisting of ethylene glycol, propylene glycol, butylene glycol, neopentyl glycol and cyclohexanedimethanol, and a curing agent capable of reacting with the amorphous polyester polyol.

Abstract: It is an object of the present invention to provide a moisture-curable polyurethane hot-melt resin composition having excellent waterproof properties, drop impact resistance, and flexibility. The present invention provides a moisture-curable polyurethane hot-melt resin composition containing a urethane prepolymer having an isocyanate group, the urethane prepolymer being produced through a reaction of a polyol (A) with a polyisocyanate (B), wherein the polyol (A) contains a polyether polyol (A-1), a crystalline polyester polyol (A-2), an amorphous polyester polyol (A-3), and an acrylic polyol (A-4). The present invention also provides an adhesive containing such a composition and an article in which such a composition is used.

Abstract: An object of the present invention is to provide a moisture-curable polyurethane hot-melt resin composition with superior properties such as water resistance, fast-curing properties, and flexibility. The present invention provides a moisture-curable polyurethane hot-melt resin composition containing an isocyanate-containing urethane prepolymer (i) that is a reaction product of polyols (A) including a polyether polyol (A-1), a crystalline polyester polyol (A-2), an amorphous polyester polyol (A-3), and an acrylic polyol (A-4) with a polyisocyanate (B); and a curing catalyst (ii) represented by general formula (1) below, and also provides an adhesive and article produced using the resin composition. The adhesive produced using the moisture-curable polyurethane hot-melt resin composition according to the present invention is suitable not only for the bonding of fibers and the lamination of construction materials, but also for the lamination of optical elements.

Abstract: An active-energy-ray-curable hot-melt urethane resin composition contains a hot-melt urethane and an active energy ray polymerization initiator, the hot-melt urethane being obtained by converting more than 50% and 100% or less of the total number of isocyanate groups in an isocyanate group-terminated urethane prepolymer into terminal (meth)acryloyl groups by a reaction with hydroxyl groups in a reactive functional group-containing (meth)acrylic compound, the isocyanate group-terminated urethane prepolymer being obtained by reacting a polyisocyanate component with a polyol component that contains an aromatic polyester polyol containing a 2,2-dimethyl-1,3-propylene structure in its molecule in an amount of 90% by mole or more of a glycol component and a polyol other than the aromatic polyester polyol.

Abstract: A radical-curable hot-melt urethane resin composition includes 100 parts by mass of a hot-melt urethane (X) having a (meth)acryloyl group and 0.5 to 5.0 parts by mass of a radical polymerization initiator (Y), wherein the hot-melt urethane (X) is obtained by introducing, using a (meth)acrylate compound (D) having an active-hydrogen-containing group, a (meth)acryloyl group into a hot-melt urethane prepolymer (C) that has isocyanate groups at its terminals and is obtained by a reaction of a polyol (A) and an alicyclic polyisocyanate (B), the polyol (A) containing an aliphatic polycarbonate polyol (a1), an alicyclic polycarbonate polyol (a2), or an aliphatic polyether polyol (a3), in an amount of more than 50 mol % and 100 mol % or less of the total number of isocyanate groups of the urethane prepolymer (C).

Abstract: An object of the present invention is to provide a moisture-curable polyurethane hot-melt resin composition with superior properties such as water resistance, fast-curing properties, and flexibility. The present invention provides a moisture-curable polyurethane hot-melt resin composition containing an isocyanate-containing urethane prepolymer (i) that is a reaction product of polyols (A) including a polyether polyol (A-1), a crystalline polyester polyol (A-2), an amorphous polyester polyol (A-3), and an acrylic polyol (A-4) with a polyisocyanate (B); and a curing catalyst (ii) represented by general formula (1) below, and also provides an adhesive and article produced using the resin composition. The adhesive produced using the moisture-curable polyurethane hot-melt resin composition according to the present invention is suitable not only for the bonding of fibers and the lamination of construction materials, but also for the lamination of optical elements.

Abstract: A radical-curable hot-melt urethane resin composition includes 100 parts by mass of a hot-melt urethane (X) having a (meth)acryloyl group and 0.5 to 5.0 parts by mass of a radical polymerization initiator (Y), wherein the hot-melt urethane (X) is obtained by introducing, using a (meth)acrylate compound (D) having an active-hydrogen-containing group, a (meth)acryloyl group into a hot-melt urethane prepolymer (C) that has isocyanate groups at its terminals and is obtained by a reaction of a polyol (A) and an alicyclic polyisocyanate (B), the polyol (A) containing an aliphatic polycarbonate polyol (a1), an alicyclic polycarbonate polyol (a2), or an aliphatic polyether polyol (a3), in an amount of more than 50 mol % and 100 mol % or less of the total number of isocyanate groups of the urethane prepolymer (C).

Abstract: It is an object of the present invention to provide a moisture-curable polyurethane hot-melt resin composition having excellent waterproof properties, drop impact resistance, and flexibility. The present invention provides a moisture-curable polyurethane hot-melt resin composition containing a urethane prepolymer having an isocyanate group, the urethane prepolymer being produced through a reaction of a polyol (A) with a polyisocyanate (B), wherein the polyol (A) contains a polyether polyol (A-1), a crystalline polyester polyol (A-2), an amorphous polyester polyol (A-3), and an acrylic polyol (A-4). The present invention also provides an adhesive containing such a composition and an article in which such a composition is used.

Abstract: An active-energy-ray-curable hot-melt urethane resin composition contains a hot-melt urethane and an active energy ray polymerization initiator, the hot-melt urethane being obtained by converting more than 50% and 100% or less of the total number of isocyanate groups in an isocyanate group-terminated urethane prepolymer into terminal (meth)acryloyl groups by a reaction with hydroxyl groups in a reactive functional group-containing (meth)acrylic compound, the isocyanate group-terminated urethane prepolymer being obtained by reacting a polyisocyanate component with a polyol component that contains an aromatic polyester polyol containing a 2,2-dimethyl-1,3-propylene structure in its molecule in an amount of 90% by mole or more of a glycol component and a polyol other than the aromatic polyester polyol.

Abstract: An oxygen-barrier film and an adhesive used therefor. Provided are an adhesive, which can be used for packaging foodstuffs and contains mainly a polyester having excellent oxygen-barrier properties, and an oxygen-barrier film that uses the adhesive. The oxygen-barrier film is prepared using an adhesive that includes: an amorphous polyester polyol, which is obtained by polycondensation of a polyvalent carboxylic acid component including at least one type of ortho-oriented aromatic dicarboxylic acid or anhydride thereof, and a polyhydric alcohol including at least one compound selected from the group consisting of ethylene glycol, propylene glycol, butylene glycol, neopentyl glycol and cyclohexanedimethanol, and a curing agent capable of reacting with the amorphous polyester polyol.

Abstract: An object of the present invention is to provide a moisture-permeable film having superior moisture permeability and flexibility at levels enabling the use thereof in the production of textile products such as clothes, while also not being susceptible to the occurrence of decreases in surface quality caused by roughening.

Abstract: An object of the present invention is to provide a moisture-permeable film having superior moisture permeability and flexibility at levels enabling the use thereof in the production of textile products such as clothes, while also not being susceptible to the occurrence of decreases in surface quality caused by roughening.