A waterborne polyurethane dispersion is provided. The waterborne polyurethane dispersion is prepared by using a tri-functionality polyether polyol as part of the polyols for forming the prepolymer and a hydrophilic amino siloxane co-chain extender, and can exhibit superior performance properties such as enhanced color fastness, improved low temperature stability, good anti-stickiness, bally flex resistance, anti-abrasion and mechanical properties. A laminated synthetic leather article prepared with said waterborne polyurethane dispersion as well the method for preparing the synthetic leather article are also provided.

A method for producing a supporting glove includes the steps of applying a specific amount of a first polymer mixed liquid to a knitted glove; drying the first polymer mixed liquid applied to the knitted glove; applying a coagulant solution to the knitted glove after drying; applying a specific amount of a second polymer mixed liquid to the knitted glove after applying the coagulant solution; and drying the second polymer mixed liquid applied to the knitted glove. A first polymer film is formed to cover a yarn knitted into the knitted glove over the entire thickness direction of at least the part of the knitted glove. A second polymer film is formed to continuously cover the first polymer film to form at least a part of an outer surface and not reaching an inner surface of the knitted glove.

A method for producing a supporting glove includes the steps of applying a specific amount of a first polymer mixed liquid to a knitted glove; drying the first polymer mixed liquid applied to the knitted glove; applying a coagulant solution to the knitted glove after drying; applying a specific amount of a second polymer mixed liquid to the knitted glove after applying the coagulant solution; and drying the second polymer mixed liquid applied to the knitted glove. A first polymer film is formed to cover a yarn knitted into the knitted glove over the entire thickness direction of at least the part of the knitted glove. A second polymer film is formed to continuously cover the first polymer film to form at least a part of an outer surface and not reaching an inner surface of the knitted glove.

The invention provides a flame retardant material comprising a substrate, an optionally corona-treated coating on the substrate, the coating comprising a polyolefin composition comprising a) an ethylene based plastomer with a density in the range of 0.857 to 0.915 g/cm.sup.3 and an MFR.sub.2 in the range 0.5-30 g/10 min; b) a propylene based plastomer with a density in the range of 0.860 to 0.910 g/cm.sup.3 and an MFR.sub.2 in the range 0.01-30 g/10 min; and c) a flame retardant, a primer layer on top of the coating and a lacquer topcoat.

An artificial leather is provided having excellent flame retardancy and moderate air permeability and a flexible texture, where the artificial leather feels like natural suede and has an elegant appearance, the artificial leather including a fiber entanglement including an ultrafine fiber having an average single fiber diameter of 0.1 μm or more and 10 μm or less, and an elastomer, in which one surface is a napped surface having a raised nap, the other surface is a flame retardant surface having a flame retardant, and the following requirements 1 and 2 are satisfied: requirement 1: at least the flame retardant surface has a plurality of opening portions; requirement 2: the flame retardant has a tackiness of 0.1 N/cm.sup.2 or more and 2.0 N/cm.sup.2 or less.

An artificial leather is provided that has supple flexibility, moderate resilience while being dense and satisfactory thickness, where the artificial leather includes, as constituent elements, a nonwoven fabric containing ultrafine fibers having an average single-fiber diameter of 0.1 μm or more and 10 μm or less, and an elastomer, the artificial leather satisfying Formulas (a) and (b) below:

0.5≤F.sub.A/F.sub.B<1  (a)

0.5≤F.sub.C/F.sub.B<1  (b)

where F.sub.A, F.sub.B, and F.sub.C are respectively the fiber density (g/cm.sup.3) in a layer on one surface side, the fiber density (g/cm.sup.3) in a layer at the center in the thickness direction, and the fiber density (g/cm.sup.3) in a layer on the other surface side when the artificial leather is trisected in the thickness direction.

A method for manufacturing a leather article including a flexible leather includes steps as follows. A leather precursor is provided, wherein the leather precursor includes a polymer material. A release member, the leather precursor and a pressing member are stacked in sequence to form a stacked set, wherein at least one of the release member and the pressing member is formed with a plurality of vents. The stacked set is heated and vacuumized to allow the polymer material to form the flexible leather, such that the leather precursor forms the leather article. The leather article is separated from the release member and the pressing member.

A method for manufacturing a leather article including a flexible leather includes steps as follows. A leather precursor is provided, wherein the leather precursor includes a polymer material. A release member, the leather precursor and a pressing member are stacked in sequence to form a stacked set, wherein at least one of the release member and the pressing member is formed with a plurality of vents. The stacked set is heated and vacuumized to allow the polymer material to form the flexible leather, such that the leather precursor forms the leather article. The leather article is separated from the release member and the pressing member.

A composite membrane including at least one fabric, the membrane including a surface polymer layer, the surface polymer layer including silver and at least one polymer selected from the group formed by fluorinated polymers and silicones, and the membrane being such that silver is in the form of silver supported by a mineral matrix in powder form, the particle size of the matrix being strictly larger than 0.1 μm and strictly smaller than 20 μm. A method for manufacturing a membrane according to the invention. A use of a membrane according to the invention as a virucide.

A composite membrane including at least one fabric, the membrane including a surface polymer layer, the surface polymer layer including silver and at least one polymer selected from the group formed by fluorinated polymers and silicones, and the membrane being such that silver is in the form of silver supported by a mineral matrix in powder form, the particle size of the matrix being strictly larger than 0.1 μm and strictly smaller than 20 μm. A method for manufacturing a membrane according to the invention. A use of a membrane according to the invention as a virucide.