The invention relates to a method for coating textiles and/or leather, comprising applying at least one polyurethane urea dissolved in a solvent or solvent mixture, wherein the solvent consists of one or more monohydroxy-functional alcohols, or a solvent mixture consisting of organic solvents, containing >80 wt. % of at least one monohydroxy-functional alcohol in relation to the total mass of the solvent mixture is used, and wherein the polyurethane urea is formed by: a) at least one araliphatic, aliphatic and/or cycloaliphatic diisocyanate; b) at least one polyether polyol having a number average molecular weight M.sub.n≧400 and ≦6000 g/mol and an average hydroxyl functionality of ≧1.5 and ≦4; c) at least one amino-functional compound having at least two isocyanate reactive amino groups; and optionally other components. The invention also relates to a textile or leather coating produced using this method and a dissolved polyurethane urea, and to the use of the polyurethane urea for coating substrates and for producing free films.

The present disclosure relates to a polyurethane-urea resin composition for synthetic leather and a method of preparing the polyurethane-urea resin composition, the polyurethane-urea resin composition having excellent resin stability, heat resistance and aesthetic properties by including an ionic compound containing a sulfonic acid group, and by not including a neutralizer. In addition, the polyurethane-urea resin composition for synthetic leather may be applicable for various purposes by controlling a polyurethane-urea particle size to a desired size by controlling a content of the ionic compound containing a sulfonic acid group.

Textiles backed with a polyurethane cushion are produced by applying a layer of frothed polyurethane-forming mixture to a surface of the textile. The mixture contains both water and a physical blowing agent. The layer expands due to the action of the water and the physical blowing agent and cures to form an attached cushion having a density of 176 g/L or less.

Aqueous polyurethane dispersions are useful for making artificial leather and similar products. The dispersions contain polyurethane-urea particles dispersed in an aqueous phase. The particles are made using isophorone diisocyanate, certain cyclic amine chain extenders and certain polyol mixtures.

Disclosed is a grain-finished leather-like sheet including: a fiber base material; and a polyurethane skin film stacked, as a surface layer, directly on the fiber base material or via another polyurethane layer, wherein the polyurethane skin film contains at least one of a diketopyrrolopyrrole-based red pigment and an α-type phthalocyanine-based blue pigment, the grain-finished leather-like sheet further includes a clear polyurethane film layer coating the polyurethane skin film, and the grain-finished leather-like sheet has a grade of color difference, determined using a Grey scale for assessing staining, of 4-5 or more, when 0.03 g of oleic acid is added dropwise to a surface of the clear polyurethane film layer, and thereafter a white cotton fabric is reciprocated 100 times on the surface, using a crockmeter.

A purpose of the present invention is to provide a sheet-shaped article and a manufacturing method therefor, said sheet-shaped article demonstrating both a supple texture and superior wear resistance. In order to achieve this purpose, a sheet-shaped article according to the present invention is a sheet-shaped article that includes, in a fibrous base material, a polymer elastic body with a hydrophilic group, said fibrous base material comprising extremely fine fibers with an average individual fiber fineness of 0.1 μm to 10 μm, wherein the sheet-shaped article has N-acylurea bonding or isourea bonding within the polymer elastic body, and a monovalent positive ion-including inorganic salt is present at a rate of 0.1 mass % to 5 mass % with regard to the mass of the polymer elastic body.

The disclosure provides a new method for preparing a WPU synthetic leather foaming layer based on a Pickering foam template method. The key of the method is to use the soft waterborne polyurethane as raw materials, add waterborne crosslinking agent and hydrophobic inorganic solid particles as Pickering waterborne foam stabilizers to obtain Pickering waterborne foam slurry of polyurethane latex particles through high-speed emulsification; and dry the slurry to obtain the waterborne polyurethane foam layer. The preparation process does not use any organic solvents, is clean and environmentally-friendly, and is simple to operate, making it easier to realize industrialized production. In addition, the Pickering foam has strong interface stability, which effectively solves the problem of difficult adjustment of the pore size caused by the accumulation and collapse of bubbles during the drying process of the mechanical foaming method, and the prepared synthetic leather foam layer has good hygienic properties.

The present invention provides a urethane resin composition including an anionic urethane resin (X) and water (Y), in which the anionic urethane resin (X) is produced using, as raw materials, a polycarbonate polyol (A-1) produced using biomass-derived decanediol as a raw material, and a polycarbonate polyol (A-2) produced using a biomass-derived dihydroxy compound having a cyclic ether structure as a raw material. The polycarbonate polyol (A-1) is preferably produced further using butanediol as a raw material. In the polycarbonate polyol (A-1), the molar ratio [(C4)/(C10)] of the butanediol (C4) to the biomass-derived decanediol (C10) is preferably within a range of 50/50 to 98/2.

A napped artificial leather including a non-woven fabric including ultrafine fibers and a polyurethane, the napped artificial leather including a napped surface formed by napping the ultrafine fibers on a surface thereof, wherein the napped surface has, after a Martindale abrasion test in accordance with JIS L 1096 (6.17.5E method, Martindale method) under a pressing load of 12 kPa and 50000 times of abrasions, a ratio of the polyurethane observed by a surface observation using an electron microscope in a portion that has been subjected to the Martindale abrasion test, of 4.0% or less.

The present invention provides a urethane resin composition including an anionic urethane resin (X) and water (Y). The anionic urethane resin (X) is produced using, as essential raw materials: a polyol (a) including a polycarbonate polyol (a1) produced using biomass-derived decanediol as a raw material; and a polyisocyanate (b) including an aliphatic polyisocyanate (b1) and an alicyclic polyisocyanate (b2). Furthermore, the present invention provides a dry coating formed from the urethane resin composition, and provides a synthetic leather including the coating as a skin layer. The polycarbonate polyol (a1) is preferably produced further using butanediol as a raw material. The molar ratio [(b1)/(b2)] of the aliphatic polyisocyanate (b1) to the alicyclic polyisocyanate (b2) is preferably within a range of 10/90 to 90/10.