The present invention relates to an organosilicon synthetic leather and a preparation method thereof. The organosilicon synthetic leather comprises a surface glue layer, a bottom glue layer, and a base layer which are overlapped sequentially. The preparation method comprises the steps of: mixing the main raw materials of the surface glue layer in a proper proportion to obtain a surface glue; mixing the main raw materials of the bottom glue layer in a proper proportion to obtain a bottom glue; coating and curing the surface glue on a release paper, coating the bottom glue on the cured surface glue to form the bottom glue layer, then compositing the bottom glue layer with the base layer and curing composited bottom glue layer, and striping the release paper to obtain the organosilicon synthetic leather. The inventive organosilicon synthetic leather has excellent safety, wear resistance, antifouling property and flame retardancy.

Provided is a synthetic leather including: a base fabric that has a limiting oxygen index of 25 or more, and that is a knitted body of a yarn including a flame-retardant fiber having a limiting oxygen index of 25 or more, a cellulose-based fiber, and a carbon fiber; an adhesion layer containing a flame retardant, the adhesion layer being provided at at least one side of the base fabric; and a skin layer provided at a side of the adhesion layer opposite from a side at which the base fabric is provided.

A task to be achieved by the invention is to provide a foamed sheet having excellent retention of foam, hand feeling, and peel strength. The present invention provides a foamed sheet which is formed from a water dispersion of a urethane resin (X), wherein the water dispersion has a urethane resin (X) content of 50 to 80% by mass, and the water dispersion contains no organic solvent. Further, the present invention provides a synthetic leather having at least a substrate (i) and a polyurethane layer (ii), wherein the polyurethane layer (ii) is formed from the above-mentioned foamed sheet. The foamed sheet preferably has a density of 200 to 1,000 kg/m.sup.3.

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.

The present invention provides a method for producing synthetic leather using a silicone rubber coating liquid; and synthetic leather produced by the method.

A process is disclosed for the preparation of multilayered composite materials comprising, as components: (A) a backing material, (B) optionally at least one tie layer and (C) a polymer layer,
wherein a polymer layer (C) is formed using a mold, optionally at least one organic adhesive is applied all over or partially to backing material (A) and/or to polymer layer (C) and then polymer layer (C) is bonded with backing material (A) in point, strip or two-dimensional fashion, polymer layer (C) and/or at least one tie layer (B) being prepared from aqueous polymer dispersions which comprise at least one crosslinking agent C and from 0.1 to 5% by weight of at least one solvent selected from dipropylene glycol dimethyl ether and/or 1,2-propanediol diacetate.

Disclosed herein is a non-solvent polyurethane system, which includes catalysts of at least a non-tin metal compound with an amine-based catalyst. Further disclosed herein is an artificial leather including a top coat, a first polyurethane layer made from the non-solvent polyurethane system, optionally a further polyurethane layer and optionally a substrate layer. Additionally disclosed herein is a process for producing an artificial leather thereof.

A waterborne polyurethane dispersion for the polyurethane foam of synthetic leather application, derived from (1) a prepolymer derived from the reaction of reactants comprising at least one aromatic isocyanate compound, an ethylene oxide-capped polyether triol, at least one polyether diol, and at least one polyester diol; (2) water; and (3) surfactant, is disclosed. The waterborne polyurethane dispersion can be used to prepare a synthetic leather product having superior wrinkle resistance, hand-feeling and peel strength. A synthetic leather article prepared with said waterborne polyurethane dispersion is also disclosed.

Radiation-curing bio-based durable topcoats or coatings and a radiation cure method of producing leather alternatives are disclosed. Biobased non-isocyanate poly(hydroxyl urethane) (NIPU), biobased polyesters, biobased polyethers, biobased polycarbonates, and biobased polyamides can be readily synthesized, and further modified with biobased acryloyl chloride, methacryloyl chloride, or itaconic anhydride into biobased radiation curable prepolymers. Through formulating such obtained biobased prepolymers with biobased acrylate and biobased methacrylate monomers, and using a radiation cure method, durable topcoats and leather alternatives with low environmental footprints can be obtained.

Provided is a synthetic leather including a fibrous substrate, a porous resin layer provided on the fibrous substrate, and a non-porous resin layer provided on the porous resin layer. The synthetic leather has a thickness of 800 ?m or more, and a vertical cross-section of the porous resin layer has a pore area ratio of 25% or more.